AL1 postcode district: St Albans and around, Hertfordshire

AL1 is a postcode district in Hertfordshire, with 1,217 postcodes in use in 6 sectors. It has postcodes in St Albans and London Colney. Its council is St Albans.

Postcodes in use
1,217
Sectors
6
Council
St Albans
Places
2 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in AL1, by flood risk

Map of every postcode in AL1, by flood risk Of the 1,217 postcodes in AL1 that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 9 are at low risk at worst and 1,206 are not on the Environment Agency's at-risk list. Places named: St Albans. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. A414A1057A4147A1081 AL1 1AG: not on the flood risk listAL1 1AJ: not on the flood risk listAL1 1AR: not on the flood risk listAL1 1AS: not on the flood risk listAL1 1AT: not on the flood risk listAL1 1AU: not on the flood risk listAL1 1AW: not on the flood risk listAL1 1AX: not on the flood risk listAL1 1BH: not on the flood risk listAL1 1BX: not on the flood risk listAL1 1BY: not on the flood risk listAL1 1BZ: not on the flood risk listAL1 1DH: not on the flood risk listAL1 1DS: not on the flood risk listAL1 1DT: not on the flood risk listAL1 1DU: not on the flood risk listAL1 1DW: not on the flood risk listAL1 1DX: not on the flood risk listAL1 1DZ: not on the flood risk listAL1 1EA: not on the flood risk listAL1 1EB: not on the flood risk listAL1 1EE: not on the flood risk listAL1 1EG: not on the flood risk listAL1 1EQ: not on the flood risk listAL1 1ER: not on the flood risk listAL1 1EU: not on the flood risk listAL1 1EX: not on the flood risk listAL1 1HA: not on the flood risk listAL1 1HB: not on the flood risk listAL1 1HG: not on the flood risk listAL1 1HH: not on the flood risk listAL1 1HJ: not on the flood risk listAL1 1HL: not on the flood risk listAL1 1HN: not on the flood risk listAL1 1HP: not on the flood risk listAL1 1HQ: not on the flood risk listAL1 1HR: not on the flood risk listAL1 1HU: not on the flood risk listAL1 1HW: not on the flood risk listAL1 1HY: not on the flood risk listAL1 1JA: not on the flood risk listAL1 1JB: not on the flood risk listAL1 1JD: not on the flood risk listAL1 1JE: not on the flood risk listAL1 1JG: not on the flood risk listAL1 1JH: not on the flood risk listAL1 1JJ: not on the flood risk listAL1 1JL: not on the flood risk listAL1 1JN: not on the flood risk listAL1 1JP: not on the flood risk listAL1 1JQ: not on the flood risk listAL1 1JR: not on the flood risk listAL1 1JS: not on the flood risk listAL1 1JT: not on the flood risk listAL1 1JU: not on the flood risk listAL1 1JW: not on the flood risk listAL1 1LA: not on the flood risk listAL1 1LB: not on the flood risk listAL1 1LE: not on the flood risk listAL1 1LJ: not on the flood risk listAL1 1LN: not on the flood risk listAL1 1LR: not on the flood risk listAL1 1LS: not on the flood risk listAL1 1LT: not on the flood risk listAL1 1LZ: not on the flood risk listAL1 1NB: not on the flood risk listAL1 1ND: not on the flood risk listAL1 1NE: not on the flood risk listAL1 1NF: not on the flood risk listAL1 1NG: not on the flood risk listAL1 1NH: not on the flood risk listAL1 1NJ: not on the flood risk listAL1 1NL: not on the flood risk listAL1 1NN: not on the flood risk listAL1 1NR: not on the flood risk listAL1 1NS: not on the flood risk listAL1 1NU: not on the flood risk listAL1 1NW: not on the flood risk listAL1 1NX: not on the flood risk listAL1 1PA: not on the flood risk listAL1 1PB: not on the flood risk listAL1 1PD: not on the flood risk listAL1 1PF: not on the flood risk listAL1 1PG: not on the flood risk listAL1 1PJ: not on the flood risk listAL1 1PL: not on the flood risk listAL1 1PP: not on the flood risk listAL1 1PQ: not on the flood risk listAL1 1PR: not on the flood risk listAL1 1PS: not on the flood risk listAL1 1PT: not on the flood risk listAL1 1PU: not on the flood risk listAL1 1PW: not on the flood risk listAL1 1PX: not on the flood risk listAL1 1QB: not on the flood risk listAL1 1QD: not on the flood risk listAL1 1QE: not on the flood risk listAL1 1QF: not on the flood risk listAL1 1QH: not on the flood risk listAL1 1QJ: not on the flood risk listAL1 1QL: not on the flood risk listAL1 1QQ: not on the flood risk listAL1 1QU: not on the flood risk listAL1 1QW: not on the flood risk listAL1 1RB: not on the flood risk listAL1 1RD: not on the flood risk listAL1 1RF: not on the flood risk listAL1 1RG: not on the flood risk listAL1 1RH: not on the flood risk listAL1 1RJ: not on the flood risk listAL1 1RL: not on the flood risk listAL1 1RN: not on the flood risk listAL1 1RP: not on the flood risk listAL1 1RQ: not on the flood risk listAL1 1RR: not on the flood risk listAL1 1RS: not on the flood risk listAL1 1RT: not on the flood risk listAL1 1RW: not on the flood risk listAL1 1RX: not on the flood risk listAL1 1RY: not on the flood risk listAL1 1RZ: not on the flood risk listAL1 1SD: not on the flood risk listAL1 1SE: not on the flood risk listAL1 1SG: not on the flood risk listAL1 1SH: not on the flood risk listAL1 1SJ: not on the flood risk listAL1 1SN: not on the flood risk listAL1 1SP: not on the flood risk listAL1 1SQ: not on the flood risk listAL1 1SR: not on the flood risk listAL1 1SS: not on the flood risk listAL1 1SW: not on the flood risk listAL1 1SX: not on the flood risk listAL1 1SZ: not on the flood risk listAL1 1TA: not on the flood risk listAL1 1TB: not on the flood risk listAL1 1TD: not on the flood risk listAL1 1TE: not on the flood risk listAL1 1TF: not on the flood risk listAL1 1TG: not on the flood risk listAL1 1TH: not on the flood risk listAL1 1TJ: not on the flood risk listAL1 1TN: not on the flood risk listAL1 1TP: not on the flood risk listAL1 1TQ: not on the flood risk listAL1 1TR: not on the flood risk listAL1 1TS: not on the flood risk listAL1 1TT: not on the flood risk listAL1 1TU: not on the flood risk listAL1 1TW: not on the flood risk listAL1 1TY: not on the flood risk listAL1 1TZ: not on the flood risk listAL1 1UA: not on the flood risk listAL1 1UB: not on the flood risk listAL1 1UD: not on the flood risk listAL1 1UE: not on the flood risk listAL1 1UF: not on the flood risk listAL1 1UG: not on the flood risk listAL1 1UH: not on the flood risk listAL1 1UJ: not on the flood risk listAL1 1UL: not on the flood risk listAL1 1UN: not on the flood risk listAL1 1UP: not on the flood risk listAL1 1UQ: not on the flood risk listAL1 1UR: not on the flood risk listAL1 1UT: not on the flood risk listAL1 1UU: not on the flood risk listAL1 1UW: not on the flood risk listAL1 1UX: not on the flood risk listAL1 1UZ: not on the flood risk listAL1 1WZ: not on the flood risk listAL1 1XB: not on the flood risk listAL1 1XL: not on the flood risk listAL1 1XT: not on the flood risk listAL1 2AA: not on the flood risk listAL1 2AD: not on the flood risk listAL1 2AE: not on the flood risk listAL1 2AF: not on the flood risk listAL1 2AH: not on the flood risk listAL1 2AJ: not on the flood risk listAL1 2AL: not on the flood risk listAL1 2AN: not on the flood risk listAL1 2AP: not on the flood risk listAL1 2AQ: not on the flood risk listAL1 2AR: not on the flood risk listAL1 2AS: not on the flood risk listAL1 2AT: not on the flood risk listAL1 2AU: not on the flood risk listAL1 2AW: not on the flood risk listAL1 2AX: not on the flood risk listAL1 2AY: not on the flood risk listAL1 2AZ: not on the flood risk listAL1 2BA: not on the flood risk listAL1 2BB: not on the flood risk listAL1 2BD: not on the flood risk listAL1 2BE: not on the flood risk listAL1 2BG: not on the flood risk listAL1 2BH: not on the flood risk listAL1 2BJ: not on the flood risk listAL1 2BL: not on the flood risk listAL1 2BN: not on the flood risk listAL1 2BP: not on the flood risk listAL1 2BQ: not on the flood risk listAL1 2BS: not on the flood risk listAL1 2BT: not on the flood risk listAL1 2BU: not on the flood risk listAL1 2BW: not on the flood risk listAL1 2BX: not on the flood risk listAL1 2BY: not on the flood risk listAL1 2BZ: not on the flood risk listAL1 2DD: not on the flood risk listAL1 2DE: not on the flood risk listAL1 2DF: not on the flood risk listAL1 2DG: not on the flood risk listAL1 2DJ: not on the flood risk listAL1 2DL: not on the flood risk listAL1 2DN: not on the flood risk listAL1 2DP: not on the flood risk listAL1 2DS: not on the flood risk listAL1 2DT: not on the flood risk listAL1 2DU: not on the flood risk listAL1 2DW: not on the flood risk listAL1 2DX: not on the flood risk listAL1 2EA: not on the flood risk listAL1 2ED: not on the flood risk listAL1 2EF: not on the flood risk listAL1 2EJ: not on the flood risk listAL1 2EL: not on the flood risk listAL1 2EN: not on the flood risk listAL1 2EP: not on the flood risk listAL1 2ER: not on the flood risk listAL1 2ET: not on the flood risk listAL1 2EW: not on the flood risk listAL1 2EX: not on the flood risk listAL1 2EY: not on the flood risk listAL1 2EZ: not on the flood risk listAL1 2HH: not on the flood risk listAL1 2HL: not on the flood risk listAL1 2HN: not on the flood risk listAL1 2HP: not on the flood risk listAL1 2HQ: not on the flood risk listAL1 2HR: not on the flood risk listAL1 2HS: not on the flood risk listAL1 2HT: not on the flood risk listAL1 2HU: not on the flood risk listAL1 2HW: not on the flood risk listAL1 2HX: not on the flood risk listAL1 2HY: not on the flood risk listAL1 2HZ: not on the flood risk listAL1 2JA: not on the flood risk listAL1 2JB: not on the flood risk listAL1 2JD: not on the flood risk listAL1 2JE: not on the flood risk listAL1 2JF: not on the flood risk listAL1 2JG: not on the flood risk listAL1 2JH: not on the flood risk listAL1 2JJ: not on the flood risk listAL1 2JL: not on the flood risk listAL1 2JN: not on the flood risk listAL1 2JP: not on the flood risk listAL1 2JR: not on the flood risk listAL1 2JS: not on the flood risk listAL1 2JT: not on the flood risk listAL1 2JU: not on the flood risk listAL1 2JW: not on the flood risk listAL1 2JX: not on the flood risk listAL1 2JY: not on the flood risk listAL1 2JZ: not on the flood risk listAL1 2LA: not on the flood risk listAL1 2LB: not on the flood risk listAL1 2LD: not on the flood risk listAL1 2LE: not on the flood risk listAL1 2LF: not on the flood risk listAL1 2LG: not on the flood risk listAL1 2LH: not on the flood risk listAL1 2LJ: not on the flood risk listAL1 2LL: not on the flood risk listAL1 2LN: not on the flood risk listAL1 2LP: not on the flood risk listAL1 2LQ: not on the flood risk listAL1 2LR: not on the flood risk listAL1 2LS: not on the flood risk listAL1 2LT: not on the flood risk listAL1 2LU: not on the flood risk listAL1 2LW: not on the flood risk listAL1 2LX: not on the flood risk listAL1 2LY: not on the flood risk listAL1 2LZ: not on the flood risk listAL1 2NE: not on the flood risk listAL1 2NF: not on the flood risk listAL1 2NG: not on the flood risk listAL1 2NH: not on the flood risk listAL1 2NJ: not on the flood risk listAL1 2NL: not on the flood risk listAL1 2NN: not on the flood risk listAL1 2NP: not on the flood risk listAL1 2NQ: not on the flood risk listAL1 2NR: not on the flood risk listAL1 2NS: not on the flood risk listAL1 2NT: not on the flood risk listAL1 2NU: not on the flood risk listAL1 2NW: not on the flood risk listAL1 2NX: not on the flood risk listAL1 2NY: not on the flood risk listAL1 2NZ: not on the flood risk listAL1 2PA: not on the flood risk listAL1 2PB: not on the flood risk listAL1 2PD: not on the flood risk listAL1 2PE: not on the flood risk listAL1 2PF: not on the flood risk listAL1 2PG: not on the flood risk listAL1 2PH: not on the flood risk listAL1 2PJ: not on the flood risk listAL1 2PN: not on the flood risk listAL1 2PP: not on the flood risk listAL1 2PQ: not on the flood risk listAL1 2PT: not on the flood risk listAL1 2PU: not on the flood risk listAL1 2PW: not on the flood risk listAL1 2PX: not on the flood risk listAL1 2PY: not on the flood risk listAL1 2QA: not on the flood risk listAL1 2QB: not on the flood risk listAL1 2QD: not on the flood risk listAL1 2QE: not on the flood risk listAL1 2QF: not on the flood risk listAL1 2QG: not on the flood risk listAL1 2QH: not on the flood risk listAL1 2QJ: not on the flood risk listAL1 2QL: not on the flood risk listAL1 2QN: not on the flood risk listAL1 2QP: not on the flood risk listAL1 2QQ: not on the flood risk listAL1 2QR: not on the flood risk listAL1 2QS: not on the flood risk listAL1 2QT: not on the flood risk listAL1 2QU: not on the flood risk listAL1 2QW: not on the flood risk listAL1 2QY: not on the flood risk listAL1 2RA: not on the flood risk listAL1 2RB: not on the flood risk listAL1 2RD: not on the flood risk listAL1 2RE: not on the flood risk listAL1 2RH: not on the flood risk listAL1 2RJ: not on the flood risk listAL1 3AA: not on the flood risk listAL1 3AB: not on the flood risk listAL1 3AE: not on the flood risk listAL1 3AF: not on the flood risk listAL1 3AG: not on the flood risk listAL1 3AH: not on the flood risk listAL1 3AJ: not on the flood risk listAL1 3AL: not on the flood risk listAL1 3AN: not on the flood risk listAL1 3AP: not on the flood risk listAL1 3AQ: not on the flood risk listAL1 3AR: not on the flood risk listAL1 3AS: not on the flood risk listAL1 3AT: not on the flood risk listAL1 3AU: not on the flood risk listAL1 3AW: not on the flood risk listAL1 3AX: not on the flood risk listAL1 3AY: not on the flood risk listAL1 3AZ: not on the flood risk listAL1 3BA: not on the flood risk listAL1 3BB: not on the flood risk listAL1 3BD: not on the flood risk listAL1 3BE: not on the flood risk listAL1 3BF: not on the flood risk listAL1 3BG: not on the flood risk listAL1 3BH: not on the flood risk listAL1 3BJ: not on the flood risk listAL1 3BL: not on the flood risk listAL1 3BP: not on the flood risk listAL1 3BQ: not on the flood risk listAL1 3BS: not on the flood risk listAL1 3BT: not on the flood risk listAL1 3BU: not on the flood risk listAL1 3BW: not on the flood risk listAL1 3BX: not on the flood risk listAL1 3BY: not on the flood risk listAL1 3BZ: not on the flood risk listAL1 3DA: not on the flood risk listAL1 3DB: not on the flood risk listAL1 3DD: not on the flood risk listAL1 3DE: not on the flood risk listAL1 3DG: not on the flood risk listAL1 3DH: not on the flood risk listAL1 3DP: not on the flood risk listAL1 3DQ: not on the flood risk listAL1 3DU: not on the flood risk listAL1 3DY: not on the flood risk listAL1 3EA: not on the flood risk listAL1 3EB: not on the flood risk listAL1 3ED: not on the flood risk listAL1 3EE: not on the flood risk listAL1 3EG: not on the flood risk listAL1 3EH: not on the flood risk listAL1 3EL: not on the flood risk listAL1 3EN: not on the flood risk listAL1 3ER: not on the flood risk listAL1 3ES: not on the flood risk listAL1 3ET: not on the flood risk listAL1 3EU: not on the flood risk listAL1 3EW: not on the flood risk listAL1 3EY: not on the flood risk listAL1 3EZ: not on the flood risk listAL1 3FH: not on the flood risk listAL1 3FJ: not on the flood risk listAL1 3FL: not on the flood risk listAL1 3FN: not on the flood risk listAL1 3FP: not on the flood risk listAL1 3FR: not on the flood risk listAL1 3FS: not on the flood risk listAL1 3FT: not on the flood risk listAL1 3FU: not on the flood risk listAL1 3FW: not on the flood risk listAL1 3FX: not on the flood risk listAL1 3FZ: not on the flood risk listAL1 3GF: not on the flood risk listAL1 3GG: not on the flood risk listAL1 3GH: not on the flood risk listAL1 3GJ: not on the flood risk listAL1 3GL: not on the flood risk listAL1 3GN: not on the flood risk listAL1 3GP: not on the flood risk listAL1 3GQ: not on the flood risk listAL1 3GR: not on the flood risk listAL1 3GS: not on the flood risk listAL1 3GT: not on the flood risk listAL1 3GU: not on the flood risk listAL1 3GW: not on the flood risk listAL1 3GX: not on the flood risk listAL1 3GZ: not on the flood risk listAL1 3HA: not on the flood risk listAL1 3HB: not on the flood risk listAL1 3HD: not on the flood risk listAL1 3HE: not on the flood risk listAL1 3HF: not on the flood risk listAL1 3HG: not on the flood risk listAL1 3HL: not on the flood risk listAL1 3HP: not on the flood risk listAL1 3HS: not on the flood risk listAL1 3HT: not on the flood risk listAL1 3HZ: not on the flood risk listAL1 3JB: not on the flood risk listAL1 3JE: not on the flood risk listAL1 3JG: not on the flood risk listAL1 3JJ: not on the flood risk listAL1 3JQ: not on the flood risk listAL1 3JU: not on the flood risk listAL1 3JW: not on the flood risk listAL1 3JX: not on the flood risk listAL1 3JZ: not on the flood risk listAL1 3LB: not on the flood risk listAL1 3LD: not on the flood risk listAL1 3LE: not on the flood risk listAL1 3LF: not on the flood risk listAL1 3LH: not on the flood risk listAL1 3LP: not on the flood risk listAL1 3LQ: not on the flood risk listAL1 3LS: not on the flood risk listAL1 3LT: not on the flood risk listAL1 3LX: not on the flood risk listAL1 3LZ: not on the flood risk listAL1 3NF: not on the flood risk listAL1 3NG: not on the flood risk listAL1 3NL: not on the flood risk listAL1 3NN: not on the flood risk listAL1 3NP: not on the flood risk listAL1 3NR: not on the flood risk listAL1 3NS: not on the flood risk listAL1 3NT: not on the flood risk listAL1 3NU: not on the flood risk listAL1 3NX: not on the flood risk listAL1 3NZ: not on the flood risk listAL1 3PB: not on the flood risk listAL1 3PD: not on the flood risk listAL1 3PE: not on the flood risk listAL1 3PF: not on the flood risk listAL1 3PG: not on the flood risk listAL1 3PH: not on the flood risk listAL1 3PJ: not on the flood risk listAL1 3PL: not on the flood risk listAL1 3PN: not on the flood risk listAL1 3PP: not on the flood risk listAL1 3PQ: not on the flood risk listAL1 3PR: not on the flood risk listAL1 3PS: not on the flood risk listAL1 3PT: not on the flood risk listAL1 3PW: not on the flood risk listAL1 3PX: not on the flood risk listAL1 3PY: not on the flood risk listAL1 3PZ: not on the flood risk listAL1 3QA: not on the flood risk listAL1 3QB: not on the flood risk listAL1 3QD: not on the flood risk listAL1 3QE: not on the flood risk listAL1 3QF: not on the flood risk listAL1 3QG: not on the flood risk listAL1 3QH: not on the flood risk listAL1 3QJ: not on the flood risk listAL1 3QL: not on the flood risk listAL1 3QN: not on the flood risk listAL1 3QP: not on the flood risk listAL1 3QQ: not on the flood risk listAL1 3QR: not on the flood risk listAL1 3QS: not on the flood risk listAL1 3QT: not on the flood risk listAL1 3QU: not on the flood risk listAL1 3QW: not on the flood risk listAL1 3QX: not on the flood risk listAL1 3QY: not on the flood risk listAL1 3QZ: not on the flood risk listAL1 3RB: not on the flood risk listAL1 3RD: not on the flood risk listAL1 3RE: not on the flood risk listAL1 3RF: not on the flood risk listAL1 3RG: not on the flood risk listAL1 3RL: not on the flood risk listAL1 3RP: not on the flood risk listAL1 3RQ: not on the flood risk listAL1 3RR: not on the flood risk listAL1 3RT: not on the flood risk listAL1 3RU: not on the flood risk listAL1 3RW: not on the flood risk listAL1 3RY: not on the flood risk listAL1 3RZ: not on the flood risk listAL1 3SA: not on the flood risk listAL1 3SB: not on the flood risk listAL1 3SD: not on the flood risk listAL1 3SE: not on the flood risk listAL1 3SF: not on the flood risk listAL1 3SH: not on the flood risk listAL1 3SJ: not on the flood risk listAL1 3SL: not on the flood risk listAL1 3SP: not on the flood risk listAL1 3SQ: not on the flood risk listAL1 3SR: not on the flood risk listAL1 3ST: not on the flood risk listAL1 3SW: not on the flood risk listAL1 3TA: not on the flood risk listAL1 3TB: not on the flood risk listAL1 3TE: not on the flood risk listAL1 3TF: not on the flood risk listAL1 3TG: not on the flood risk listAL1 3TJ: not on the flood risk listAL1 3TL: not on the flood risk listAL1 3TN: not on the flood risk listAL1 3TR: not on the flood risk listAL1 3TT: not on the flood risk listAL1 3TU: not on the flood risk listAL1 3TW: not on the flood risk listAL1 3TX: not on the flood risk listAL1 3UA: not on the flood risk listAL1 3UB: not on the flood risk listAL1 3UD: not on the flood risk listAL1 3UE: not on the flood risk listAL1 3UF: not on the flood risk listAL1 3UG: not on the flood risk listAL1 3UH: not on the flood risk listAL1 3UJ: not on the flood risk listAL1 3UL: not on the flood risk listAL1 3UN: not on the flood risk listAL1 3UP: not on the flood risk listAL1 3UQ: not on the flood risk listAL1 3UR: not on the flood risk listAL1 3UU: not on the flood risk listAL1 3UZ: not on the flood risk listAL1 3WA: not on the flood risk listAL1 3XB: not on the flood risk listAL1 3XF: not on the flood risk listAL1 3XG: not on the flood risk listAL1 3XH: not on the flood risk listAL1 3XL: not on the flood risk listAL1 3XQ: not on the flood risk listAL1 3XR: not on the flood risk listAL1 3XS: not on the flood risk listAL1 3XT: not on the flood risk listAL1 3XU: not on the flood risk listAL1 3XW: not on the flood risk listAL1 3XX: not on the flood risk listAL1 3XZ: not on the flood risk listAL1 3YD: not on the flood risk listAL1 3YJ: not on the flood risk listAL1 3YN: not on the flood risk listAL1 4AA: not on the flood risk listAL1 4AB: not on the flood risk listAL1 4AD: not on the flood risk listAL1 4AE: not on the flood risk listAL1 4AG: not on the flood risk listAL1 4AH: not on the flood risk listAL1 4AJ: not on the flood risk listAL1 4AL: not on the flood risk listAL1 4AN: not on the flood risk listAL1 4AP: not on the flood risk listAL1 4AQ: not on the flood risk listAL1 4AR: not on the flood risk listAL1 4AS: not on the flood risk listAL1 4AT: not on the flood risk listAL1 4AU: not on the flood risk listAL1 4AX: not on the flood risk listAL1 4BA: not on the flood risk listAL1 4BE: not on the flood risk listAL1 4BG: not on the flood risk listAL1 4BH: not on the flood risk listAL1 4BJ: not on the flood risk listAL1 4BL: not on the flood risk listAL1 4BN: not on the flood risk listAL1 4BP: not on the flood risk listAL1 4BQ: not on the flood risk listAL1 4BS: not on the flood risk listAL1 4BT: not on the flood risk listAL1 4BW: not on the flood risk listAL1 4DA: not on the flood risk listAL1 4DB: not on the flood risk listAL1 4DD: not on the flood risk listAL1 4DF: not on the flood risk listAL1 4DG: not on the flood risk listAL1 4DH: not on the flood risk listAL1 4DJ: not on the flood risk listAL1 4DL: not on the flood risk listAL1 4DN: not on the flood risk listAL1 4DP: not on the flood risk listAL1 4DQ: not on the flood risk listAL1 4DS: not on the flood risk listAL1 4DW: not on the flood risk listAL1 4DX: not on the flood risk listAL1 4DY: not on the flood risk listAL1 4DZ: not on the flood risk listAL1 4EA: not on the flood risk listAL1 4EB: not on the flood risk listAL1 4ED: not on the flood risk listAL1 4EE: not on the flood risk listAL1 4EF: not on the flood risk listAL1 4EJ: not on the flood risk listAL1 4EL: not on the flood risk listAL1 4EP: not on the flood risk listAL1 4ER: not on the flood risk listAL1 4ES: not on the flood risk listAL1 4ET: not on the flood risk listAL1 4EU: not on the flood risk listAL1 4EW: not on the flood risk listAL1 4EX: not on the flood risk listAL1 4EY: not on the flood risk listAL1 4EZ: not on the flood risk listAL1 4FH: not on the flood risk listAL1 4FJ: not on the flood risk listAL1 4FL: not on the flood risk listAL1 4FN: not on the flood risk listAL1 4FP: not on the flood risk listAL1 4GL: not on the flood risk listAL1 4HA: not on the flood risk listAL1 4HD: not on the flood risk listAL1 4HE: not on the flood risk listAL1 4HF: not on the flood risk listAL1 4HG: not on the flood risk listAL1 4HH: not on the flood risk listAL1 4HJ: not on the flood risk listAL1 4HL: not on the flood risk listAL1 4HN: not on the flood risk listAL1 4HQ: not on the flood risk listAL1 4HW: not on the flood risk listAL1 4HY: not on the flood risk listAL1 4JA: not on the flood risk listAL1 4JD: not on the flood risk listAL1 4JE: not on the flood risk listAL1 4JG: not on the flood risk listAL1 4JH: not on the flood risk listAL1 4JL: not on the flood risk listAL1 4JP: not on the flood risk listAL1 4JR: not on the flood risk listAL1 4JS: not on the flood risk listAL1 4JT: not on the flood risk listAL1 4JU: not on the flood risk listAL1 4JW: not on the flood risk listAL1 4JX: not on the flood risk listAL1 4JY: not on the flood risk listAL1 4JZ: not on the flood risk listAL1 4LA: not on the flood risk listAL1 4LB: not on the flood risk listAL1 4LE: not on the flood risk listAL1 4LF: not on the flood risk listAL1 4LG: not on the flood risk listAL1 4LH: not on the flood risk listAL1 4LJ: not on the flood risk listAL1 4LQ: not on the flood risk listAL1 4LR: not on the flood risk listAL1 4LU: not on the flood risk listAL1 4LW: not on the flood risk listAL1 4LX: not on the flood risk listAL1 4NE: not on the flood risk listAL1 4NF: not on the flood risk listAL1 4NG: not on the flood risk listAL1 4NH: not on the flood risk listAL1 4NJ: not on the flood risk listAL1 4NL: not on the flood risk listAL1 4NN: not on the flood risk listAL1 4NP: not on the flood risk listAL1 4NQ: not on the flood risk listAL1 4NR: not on the flood risk listAL1 4NS: not on the flood risk listAL1 4NT: not on the flood risk listAL1 4NU: not on the flood risk listAL1 4NW: not on the flood risk listAL1 4NX: not on the flood risk listAL1 4NY: not on the flood risk listAL1 4NZ: not on the flood risk listAL1 4PA: not on the flood risk listAL1 4PB: not on the flood risk listAL1 4PD: not on the flood risk listAL1 4PF: not on the flood risk listAL1 4PL: not on the flood risk listAL1 4PN: not on the flood risk listAL1 4PP: not on the flood risk listAL1 4PR: not on the flood risk listAL1 4PS: not on the flood risk listAL1 4PT: not on the flood risk listAL1 4PU: not on the flood risk listAL1 4PW: not on the flood risk listAL1 4PX: not on the flood risk listAL1 4PY: not on the flood risk listAL1 4PZ: not on the flood risk listAL1 4QA: not on the flood risk listAL1 4QB: not on the flood risk listAL1 4QD: not on the flood risk listAL1 4QE: not on the flood risk listAL1 4QF: not on the flood risk listAL1 4QG: not on the flood risk listAL1 4QH: not on the flood risk listAL1 4QJ: not on the flood risk listAL1 4QL: not on the flood risk listAL1 4QN: not on the flood risk listAL1 4QQ: not on the flood risk listAL1 4QR: not on the flood risk listAL1 4QU: not on the flood risk listAL1 4QW: not on the flood risk listAL1 4QX: not on the flood risk listAL1 4QY: not on the flood risk listAL1 4QZ: not on the flood risk listAL1 4RA: not on the flood risk listAL1 4RB: not on the flood risk listAL1 4RD: not on the flood risk listAL1 4RE: not on the flood risk listAL1 4RF: not on the flood risk listAL1 4RG: not on the flood risk listAL1 4RH: not on the flood risk listAL1 4RJ: not on the flood risk listAL1 4RL: not on the flood risk listAL1 4RQ: not on the flood risk listAL1 4RS: not on the flood risk listAL1 4RT: not on the flood risk listAL1 4RU: not on the flood risk listAL1 4RX: not on the flood risk listAL1 4RY: not on the flood risk listAL1 4RZ: not on the flood risk listAL1 4SA: not on the flood risk listAL1 4SB: not on the flood risk listAL1 4SD: not on the flood risk listAL1 4SE: not on the flood risk listAL1 4SF: not on the flood risk listAL1 4SG: not on the flood risk listAL1 4SH: not on the flood risk listAL1 4SJ: not on the flood risk listAL1 4SL: not on the flood risk listAL1 4SN: not on the flood risk listAL1 4SQ: not on the flood risk listAL1 4SU: not on the flood risk listAL1 4SW: not on the flood risk listAL1 4SY: not on the flood risk listAL1 4SZ: not on the flood risk listAL1 4TA: not on the flood risk listAL1 4TB: not on the flood risk listAL1 4TF: not on the flood risk listAL1 4TG: not on the flood risk listAL1 4TH: not on the flood risk listAL1 4TJ: not on the flood risk listAL1 4TL: not on the flood risk listAL1 4TN: not on the flood risk listAL1 4TP: not on the flood risk listAL1 4TQ: not on the flood risk listAL1 4TR: not on the flood risk listAL1 4TS: not on the flood risk listAL1 4TT: not on the flood risk listAL1 4TU: not on the flood risk listAL1 4TW: not on the flood risk listAL1 4TX: not on the flood risk listAL1 4TY: not on the flood risk listAL1 4TZ: not on the flood risk listAL1 4UA: not on the flood risk listAL1 4UB: not on the flood risk listAL1 4UD: not on the flood risk listAL1 4UE: not on the flood risk listAL1 4UN: not on the flood risk listAL1 4UR: not on the flood risk listAL1 4UT: not on the flood risk listAL1 4UU: not on the flood risk listAL1 4UX: not on the flood risk listAL1 4UZ: not on the flood risk listAL1 4XA: not on the flood risk listAL1 4XB: not on the flood risk listAL1 4XD: not on the flood risk listAL1 4XE: not on the flood risk listAL1 4XF: not on the flood risk listAL1 4XG: not on the flood risk listAL1 4XP: not on the flood risk listAL1 4XR: not on the flood risk listAL1 4XS: not on the flood risk listAL1 4XT: not on the flood risk listAL1 4XU: not on the flood risk listAL1 4XX: not on the flood risk listAL1 4XY: not on the flood risk listAL1 4XZ: not on the flood risk listAL1 4YA: not on the flood risk listAL1 5AA: not on the flood risk listAL1 5AB: not on the flood risk listAL1 5AD: not on the flood risk listAL1 5AE: not on the flood risk listAL1 5AF: not on the flood risk listAL1 5AG: not on the flood risk listAL1 5AH: not on the flood risk listAL1 5AJ: not on the flood risk listAL1 5AL: not on the flood risk listAL1 5AN: not on the flood risk listAL1 5AP: not on the flood risk listAL1 5AQ: not on the flood risk listAL1 5AR: not on the flood risk listAL1 5AS: not on the flood risk listAL1 5AT: not on the flood risk listAL1 5AW: not on the flood risk listAL1 5AX: not on the flood risk listAL1 5AY: not on the flood risk listAL1 5BA: not on the flood risk listAL1 5BD: not on the flood risk listAL1 5BE: not on the flood risk listAL1 5BJ: not on the flood risk listAL1 5BL: not on the flood risk listAL1 5BN: not on the flood risk listAL1 5BP: not on the flood risk listAL1 5BQ: not on the flood risk listAL1 5BU: not on the flood risk listAL1 5BW: not on the flood risk listAL1 5BX: not on the flood risk listAL1 5BY: not on the flood risk listAL1 5DA: not on the flood risk listAL1 5DB: not on the flood risk listAL1 5DD: not on the flood risk listAL1 5DE: not on the flood risk listAL1 5DF: not on the flood risk listAL1 5DG: not on the flood risk listAL1 5DH: not on the flood risk listAL1 5DJ: not on the flood risk listAL1 5DL: not on the flood risk listAL1 5DN: not on the flood risk listAL1 5DQ: not on the flood risk listAL1 5DR: not on the flood risk listAL1 5DW: not on the flood risk listAL1 5DX: not on the flood risk listAL1 5DY: not on the flood risk listAL1 5DZ: not on the flood risk listAL1 5EA: not on the flood risk listAL1 5EB: not on the flood risk listAL1 5ED: not on the flood risk listAL1 5EE: not on the flood risk listAL1 5EF: not on the flood risk listAL1 5EG: not on the flood risk listAL1 5EH: not on the flood risk listAL1 5EJ: not on the flood risk listAL1 5EL: not on the flood risk listAL1 5EN: not on the flood risk listAL1 5EP: not on the flood risk listAL1 5EQ: not on the flood risk listAL1 5ES: not on the flood risk listAL1 5ET: not on the flood risk listAL1 5EU: not on the flood risk listAL1 5EW: not on the flood risk listAL1 5EX: not on the flood risk listAL1 5EY: not on the flood risk listAL1 5EZ: not on the flood risk listAL1 5FG: not on the flood risk listAL1 5FH: not on the flood risk listAL1 5FJ: not on the flood risk listAL1 5FL: not on the flood risk listAL1 5FN: not on the flood risk listAL1 5FP: not on the flood risk listAL1 5FQ: not on the flood risk listAL1 5FR: not on the flood risk listAL1 5FT: not on the flood risk listAL1 5FU: not on the flood risk listAL1 5FW: not on the flood risk listAL1 5FX: not on the flood risk listAL1 5FY: not on the flood risk listAL1 5FZ: not on the flood risk listAL1 5GA: not on the flood risk listAL1 5GE: not on the flood risk listAL1 5GF: not on the flood risk listAL1 5GG: not on the flood risk listAL1 5GH: not on the flood risk listAL1 5GN: not on the flood risk listAL1 5GP: not on the flood risk listAL1 5GW: not on the flood risk listAL1 5GX: not on the flood risk listAL1 5GY: not on the flood risk listAL1 5GZ: not on the flood risk listAL1 5HA: not on the flood risk listAL1 5HB: not on the flood risk listAL1 5HD: not on the flood risk listAL1 5HE: not on the flood risk listAL1 5HG: not on the flood risk listAL1 5HL: not on the flood risk listAL1 5HN: not on the flood risk listAL1 5HQ: not on the flood risk listAL1 5HS: not on the flood risk listAL1 5HT: not on the flood risk listAL1 5HU: not on the flood risk listAL1 5HW: not on the flood risk listAL1 5HZ: not on the flood risk listAL1 5JA: not on the flood risk listAL1 5JB: not on the flood risk listAL1 5JD: not on the flood risk listAL1 5JE: not on the flood risk listAL1 5JF: not on the flood risk listAL1 5JH: not on the flood risk listAL1 5JJ: not on the flood risk listAL1 5JL: not on the flood risk listAL1 5JN: not on the flood risk listAL1 5JP: not on the flood risk listAL1 5JQ: not on the flood risk listAL1 5JR: not on the flood risk listAL1 5JS: not on the flood risk listAL1 5JW: not on the flood risk listAL1 5JX: not on the flood risk listAL1 5JZ: not on the flood risk listAL1 5LA: not on the flood risk listAL1 5LB: not on the flood risk listAL1 5LD: not on the flood risk listAL1 5LE: not on the flood risk listAL1 5LF: not on the flood risk listAL1 5LG: not on the flood risk listAL1 5LH: not on the flood risk listAL1 5LJ: not on the flood risk listAL1 5LL: not on the flood risk listAL1 5LQ: not on the flood risk listAL1 5LX: not on the flood risk listAL1 5LY: not on the flood risk listAL1 5LZ: not on the flood risk listAL1 5NA: not on the flood risk listAL1 5NB: not on the flood risk listAL1 5ND: not on the flood risk listAL1 5NE: not on the flood risk listAL1 5NF: not on the flood risk listAL1 5NG: not on the flood risk listAL1 5NH: not on the flood risk listAL1 5NJ: not on the flood risk listAL1 5NL: not on the flood risk listAL1 5NN: not on the flood risk listAL1 5NP: not on the flood risk listAL1 5NQ: not on the flood risk listAL1 5NR: not on the flood risk listAL1 5NS: not on the flood risk listAL1 5NT: not on the flood risk listAL1 5NW: not on the flood risk listAL1 5NX: not on the flood risk listAL1 5NY: not on the flood risk listAL1 5NZ: not on the flood risk listAL1 5PA: not on the flood risk listAL1 5PB: not on the flood risk listAL1 5PD: not on the flood risk listAL1 5PE: not on the flood risk listAL1 5PF: not on the flood risk listAL1 5PG: not on the flood risk listAL1 5PH: not on the flood risk listAL1 5PJ: not on the flood risk listAL1 5PN: not on the flood risk listAL1 5PQ: not on the flood risk listAL1 5PS: not on the flood risk listAL1 5PT: not on the flood risk listAL1 5PU: not on the flood risk listAL1 5PX: not on the flood risk listAL1 5PY: not on the flood risk listAL1 5PZ: not on the flood risk listAL1 5QA: not on the flood risk listAL1 5QB: not on the flood risk listAL1 5QD: not on the flood risk listAL1 5QE: not on the flood risk listAL1 5QF: not on the flood risk listAL1 5QG: not on the flood risk listAL1 5QH: not on the flood risk listAL1 5QJ: not on the flood risk listAL1 5QL: not on the flood risk listAL1 5QN: not on the flood risk listAL1 5QP: not on the flood risk listAL1 5QQ: not on the flood risk listAL1 5QR: not on the flood risk listAL1 5QS: not on the flood risk listAL1 5QT: not on the flood risk listAL1 5QU: not on the flood risk listAL1 5QW: not on the flood risk listAL1 5QX: not on the flood risk listAL1 5QY: not on the flood risk listAL1 5QZ: not on the flood risk listAL1 5RA: not on the flood risk listAL1 5RB: not on the flood risk listAL1 5RD: not on the flood risk listAL1 5RE: not on the flood risk listAL1 5RF: not on the flood risk listAL1 5RG: not on the flood risk listAL1 5RH: not on the flood risk listAL1 5RJ: not on the flood risk listAL1 5RL: not on the flood risk listAL1 5RN: not on the flood risk listAL1 5RP: not on the flood risk listAL1 5RQ: not on the flood risk listAL1 5RR: not on the flood risk listAL1 5RS: not on the flood risk listAL1 5RT: not on the flood risk listAL1 5RU: not on the flood risk listAL1 5RW: not on the flood risk listAL1 5RX: not on the flood risk listAL1 5RY: not on the flood risk listAL1 5RZ: not on the flood risk listAL1 5SA: not on the flood risk listAL1 5SB: not on the flood risk listAL1 5SD: not on the flood risk listAL1 5SE: not on the flood risk listAL1 5SF: not on the flood risk listAL1 5SG: not on the flood risk listAL1 5SH: not on the flood risk listAL1 5SJ: not on the flood risk listAL1 5SL: not on the flood risk listAL1 5SN: not on the flood risk listAL1 5SP: not on the flood risk listAL1 5SR: not on the flood risk listAL1 5SS: not on the flood risk listAL1 5ST: not on the flood risk listAL1 5SU: not on the flood risk listAL1 5SW: not on the flood risk listAL1 5SX: not on the flood risk listAL1 5SY: not on the flood risk listAL1 5SZ: not on the flood risk listAL1 5TA: not on the flood risk listAL1 5TD: not on the flood risk listAL1 5TE: not on the flood risk listAL1 5TL: not on the flood risk listAL1 5TP: not on the flood risk listAL1 5TR: not on the flood risk listAL1 5TS: not on the flood risk listAL1 5TT: not on the flood risk listAL1 5UB: not on the flood risk listAL1 5UE: not on the flood risk listAL1 5UG: not on the flood risk listAL1 5UP: not on the flood risk listAL1 5UQ: not on the flood risk listAL1 5US: not on the flood risk listAL1 5WA: not on the flood risk listAL1 5WB: not on the flood risk listAL1 5WD: not on the flood risk listAL1 1DG: low flood risk at worstAL1 1DQ: low flood risk at worstAL1 1HF: low flood risk at worstAL1 1TX: low flood risk at worstAL1 1XU: low flood risk at worstAL1 2ES: low flood risk at worstAL1 2HA: low flood risk at worstAL1 2HE: low flood risk at worstAL1 2HJ: low flood risk at worstAL1 1ST: medium flood risk at worstAL1 1SF: high flood risk St Albans Map of every postcode in AL1, by flood risk Of the 1,217 postcodes in AL1 that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 9 are at low risk at worst and 1,206 are not on the Environment Agency's at-risk list. Places named: St Albans. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A4147 St Albans
  • A home or business at high risk: 1
  • At medium risk at worst: 1
  • At low risk at worst: 9
  • At very low risk only: 0
  • Not on the at-risk list: 1,206

Of the 1,217 postcodes in AL1 that ONS places, 1 have a home or business at high risk, 1 are at medium risk at worst, 9 are at low risk at worst and 1,206 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.7489, longitude -0.3238. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

AL1 1SF2 at high risk

What broadband can you get in AL1?

Ofcom reports on 1,114 of the 1,217 postcodes in AL1. At 942 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit942 of 1,114
Postcodes where every home can get superfast1,063 of 1,114

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is AL1 at risk of flooding?

11 of the 1,217 postcodes in AL1 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 3 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 11 of 1,217 postcodes High: 2Medium: 1Low: 38Very low: 12

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in AL1?

Homes in AL1 sold for a typical £550,000 in the 12 months to August 2026, across 456 sales, up 3.8% on the 12 months before, HM Land Registry's figures show.

£550,000 typical price, the 12 months to August 2026
£530,000 12 months to August 2025
▲ up 3.8% on the 12 months before
  • Detached £1,200,000 45 sales
  • Semi-detached £840,000 93 sales
  • Terraced £607,500 142 sales
  • Flat or maisonette £324,000 176 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in AL1

Pick a sector, then a postcode. A sector is the district plus the next digit.

AL1 1190 postcodesAL1 2175 postcodesAL1 3257 postcodesAL1 4231 postcodesAL1 5248 postcodesAL1 9116 postcodes
UK postcode format explained

Places in AL1

Towns and villages with postcodes in AL1, and how many each has here.

St Albans postcodes,1,210London Colney postcodes,6

Who covers AL1

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • St Albans1,217

Police force areas

  • Hertfordshire1,217

Next to AL1

AL2 postcode district All AL districts St Albans postcodes

"Next to" is by number: the district after AL1 in the AL area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.