SG6 postcode district: Letchworth and around

SG6 is a postcode district mostly in Hertfordshire, with 978 postcodes in use in 5 sectors. It has postcodes in Letchworth, Baldock and Stotfold. It is split between 2 councils: North Hertfordshire (977 postcodes) and Central Bedfordshire (1). 977 are in Hertfordshire. ONS lists no county for the other 1.

Postcodes in use
978
Sectors
5
Councils
2 councils
Places
3 places

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

Every postcode in SG6, by flood risk

Map of every postcode in SG6, by flood risk Of the 978 postcodes in SG6 that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 967 are not on the Environment Agency's at-risk list. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A1(M)A507 SG6 1AA: not on the flood risk listSG6 1AB: not on the flood risk listSG6 1AD: not on the flood risk listSG6 1AE: not on the flood risk listSG6 1AG: not on the flood risk listSG6 1AH: not on the flood risk listSG6 1AJ: not on the flood risk listSG6 1AL: not on the flood risk listSG6 1AP: not on the flood risk listSG6 1AQ: not on the flood risk listSG6 1AR: not on the flood risk listSG6 1AS: not on the flood risk listSG6 1AT: not on the flood risk listSG6 1AW: not on the flood risk listSG6 1AX: not on the flood risk listSG6 1AY: not on the flood risk listSG6 1AZ: not on the flood risk listSG6 1BE: not on the flood risk listSG6 1BL: not on the flood risk listSG6 1BP: not on the flood risk listSG6 1BS: not on the flood risk listSG6 1BT: not on the flood risk listSG6 1BU: not on the flood risk listSG6 1BX: not on the flood risk listSG6 1BY: not on the flood risk listSG6 1BZ: not on the flood risk listSG6 1DA: not on the flood risk listSG6 1DB: not on the flood risk listSG6 1DD: not on the flood risk listSG6 1DE: not on the flood risk listSG6 1DF: not on the flood risk listSG6 1DG: not on the flood risk listSG6 1DH: not on the flood risk listSG6 1DJ: not on the flood risk listSG6 1DL: not on the flood risk listSG6 1DN: not on the flood risk listSG6 1DP: not on the flood risk listSG6 1DQ: not on the flood risk listSG6 1DR: not on the flood risk listSG6 1DS: not on the flood risk listSG6 1DT: not on the flood risk listSG6 1DU: not on the flood risk listSG6 1DW: not on the flood risk listSG6 1DX: not on the flood risk listSG6 1DY: not on the flood risk listSG6 1DZ: not on the flood risk listSG6 1EA: not on the flood risk listSG6 1EB: not on the flood risk listSG6 1ED: not on the flood risk listSG6 1EF: not on the flood risk listSG6 1EG: not on the flood risk listSG6 1EH: not on the flood risk listSG6 1EJ: not on the flood risk listSG6 1EL: not on the flood risk listSG6 1EQ: not on the flood risk listSG6 1ET: not on the flood risk listSG6 1EX: not on the flood risk listSG6 1FA: not on the flood risk listSG6 1FB: not on the flood risk listSG6 1FD: not on the flood risk listSG6 1FE: not on the flood risk listSG6 1FF: not on the flood risk listSG6 1FH: not on the flood risk listSG6 1FJ: not on the flood risk listSG6 1FL: not on the flood risk listSG6 1FN: not on the flood risk listSG6 1FP: not on the flood risk listSG6 1FQ: not on the flood risk listSG6 1FR: not on the flood risk listSG6 1FT: not on the flood risk listSG6 1FU: not on the flood risk listSG6 1FW: not on the flood risk listSG6 1FX: not on the flood risk listSG6 1FY: not on the flood risk listSG6 1FZ: not on the flood risk listSG6 1GB: not on the flood risk listSG6 1GH: not on the flood risk listSG6 1GJ: not on the flood risk listSG6 1GL: not on the flood risk listSG6 1GP: not on the flood risk listSG6 1GQ: not on the flood risk listSG6 1GR: not on the flood risk listSG6 1GT: not on the flood risk listSG6 1GU: not on the flood risk listSG6 1HA: not on the flood risk listSG6 1HB: not on the flood risk listSG6 1HD: not on the flood risk listSG6 1HE: not on the flood risk listSG6 1HG: not on the flood risk listSG6 1HJ: not on the flood risk listSG6 1HN: not on the flood risk listSG6 1HP: not on the flood risk listSG6 1HQ: not on the flood risk listSG6 1HR: not on the flood risk listSG6 1HU: not on the flood risk listSG6 1HX: not on the flood risk listSG6 1JE: not on the flood risk listSG6 1JF: not on the flood risk listSG6 1JG: not on the flood risk listSG6 1JH: not on the flood risk listSG6 1JJ: not on the flood risk listSG6 1JS: not on the flood risk listSG6 1JT: not on the flood risk listSG6 1JW: not on the flood risk listSG6 1JX: not on the flood risk listSG6 1JY: not on the flood risk listSG6 1JZ: not on the flood risk listSG6 1LA: not on the flood risk listSG6 1LB: not on the flood risk listSG6 1LD: not on the flood risk listSG6 1LH: not on the flood risk listSG6 1LJ: not on the flood risk listSG6 1LL: not on the flood risk listSG6 1LN: not on the flood risk listSG6 1LP: not on the flood risk listSG6 1LU: not on the flood risk listSG6 1LW: not on the flood risk listSG6 1NA: not on the flood risk listSG6 1ND: not on the flood risk listSG6 1NE: not on the flood risk listSG6 1NH: not on the flood risk listSG6 1NP: not on the flood risk listSG6 1NR: not on the flood risk listSG6 1NT: not on the flood risk listSG6 1NU: not on the flood risk listSG6 1NW: not on the flood risk listSG6 1NX: not on the flood risk listSG6 1NY: not on the flood risk listSG6 1PF: not on the flood risk listSG6 1PH: not on the flood risk listSG6 1PJ: not on the flood risk listSG6 1PL: not on the flood risk listSG6 1PN: not on the flood risk listSG6 1PP: not on the flood risk listSG6 1PR: not on the flood risk listSG6 1PS: not on the flood risk listSG6 1PT: not on the flood risk listSG6 1PU: not on the flood risk listSG6 1PW: not on the flood risk listSG6 1PX: not on the flood risk listSG6 1PY: not on the flood risk listSG6 1PZ: not on the flood risk listSG6 1QA: not on the flood risk listSG6 1QB: not on the flood risk listSG6 1QD: not on the flood risk listSG6 1QE: not on the flood risk listSG6 1QF: not on the flood risk listSG6 1QG: not on the flood risk listSG6 1QL: not on the flood risk listSG6 1QQ: not on the flood risk listSG6 1QR: not on the flood risk listSG6 1QT: not on the flood risk listSG6 1QU: not on the flood risk listSG6 1QX: not on the flood risk listSG6 1QY: not on the flood risk listSG6 1QZ: not on the flood risk listSG6 1RD: not on the flood risk listSG6 1RE: not on the flood risk listSG6 1RF: not on the flood risk listSG6 1RG: not on the flood risk listSG6 1RH: not on the flood risk listSG6 1RJ: not on the flood risk listSG6 1RL: not on the flood risk listSG6 1RN: not on the flood risk listSG6 1RP: not on the flood risk listSG6 1RQ: not on the flood risk listSG6 1RU: not on the flood risk listSG6 1RW: not on the flood risk listSG6 1RX: not on the flood risk listSG6 1RY: not on the flood risk listSG6 1RZ: not on the flood risk listSG6 1SA: not on the flood risk listSG6 1SB: not on the flood risk listSG6 1SD: not on the flood risk listSG6 1SE: not on the flood risk listSG6 1SH: not on the flood risk listSG6 1SL: not on the flood risk listSG6 1SN: not on the flood risk listSG6 1SP: not on the flood risk listSG6 1SW: not on the flood risk listSG6 1SX: not on the flood risk listSG6 1SZ: not on the flood risk listSG6 1TA: not on the flood risk listSG6 1TB: not on the flood risk listSG6 1TD: not on the flood risk listSG6 1TN: not on the flood risk listSG6 1TU: not on the flood risk listSG6 1TX: not on the flood risk listSG6 1TY: not on the flood risk listSG6 1TZ: not on the flood risk listSG6 1UA: not on the flood risk listSG6 1UB: not on the flood risk listSG6 1UD: not on the flood risk listSG6 1UE: not on the flood risk listSG6 1UG: not on the flood risk listSG6 1UJ: not on the flood risk listSG6 1UP: not on the flood risk listSG6 1UW: not on the flood risk listSG6 1WB: not on the flood risk listSG6 1WG: not on the flood risk listSG6 1WH: not on the flood risk listSG6 1WN: not on the flood risk listSG6 1WT: not on the flood risk listSG6 1WU: not on the flood risk listSG6 2AA: not on the flood risk listSG6 2AB: not on the flood risk listSG6 2AD: not on the flood risk listSG6 2AE: not on the flood risk listSG6 2AF: not on the flood risk listSG6 2AG: not on the flood risk listSG6 2AH: not on the flood risk listSG6 2AJ: not on the flood risk listSG6 2AL: not on the flood risk listSG6 2AN: not on the flood risk listSG6 2AP: not on the flood risk listSG6 2AQ: not on the flood risk listSG6 2AR: not on the flood risk listSG6 2AS: not on the flood risk listSG6 2AT: not on the flood risk listSG6 2AU: not on the flood risk listSG6 2AY: not on the flood risk listSG6 2AZ: not on the flood risk listSG6 2BA: not on the flood risk listSG6 2BB: not on the flood risk listSG6 2BH: not on the flood risk listSG6 2BJ: not on the flood risk listSG6 2BL: not on the flood risk listSG6 2BN: not on the flood risk listSG6 2BP: not on the flood risk listSG6 2BQ: not on the flood risk listSG6 2BS: not on the flood risk listSG6 2BT: not on the flood risk listSG6 2BU: not on the flood risk listSG6 2BW: not on the flood risk listSG6 2BX: not on the flood risk listSG6 2BY: not on the flood risk listSG6 2DD: not on the flood risk listSG6 2DE: not on the flood risk listSG6 2DF: not on the flood risk listSG6 2DG: not on the flood risk listSG6 2DH: not on the flood risk listSG6 2DL: not on the flood risk listSG6 2DN: not on the flood risk listSG6 2DP: not on the flood risk listSG6 2DQ: not on the flood risk listSG6 2DR: not on the flood risk listSG6 2DS: not on the flood risk listSG6 2DT: not on the flood risk listSG6 2DU: not on the flood risk listSG6 2DW: not on the flood risk listSG6 2DX: not on the flood risk listSG6 2EA: not on the flood risk listSG6 2ED: not on the flood risk listSG6 2EE: not on the flood risk listSG6 2EF: not on the flood risk listSG6 2EG: not on the flood risk listSG6 2EH: not on the flood risk listSG6 2EJ: not on the flood risk listSG6 2EL: not on the flood risk listSG6 2EN: not on the flood risk listSG6 2EQ: not on the flood risk listSG6 2ER: not on the flood risk listSG6 2ES: not on the flood risk listSG6 2ET: not on the flood risk listSG6 2EU: not on the flood risk listSG6 2EX: not on the flood risk listSG6 2EY: not on the flood risk listSG6 2EZ: not on the flood risk listSG6 2FB: not on the flood risk listSG6 2GA: not on the flood risk listSG6 2HA: not on the flood risk listSG6 2HB: not on the flood risk listSG6 2HG: not on the flood risk listSG6 2HH: not on the flood risk listSG6 2HJ: not on the flood risk listSG6 2HL: not on the flood risk listSG6 2HN: not on the flood risk listSG6 2HQ: not on the flood risk listSG6 2HU: not on the flood risk listSG6 2HW: not on the flood risk listSG6 2HX: not on the flood risk listSG6 2HY: not on the flood risk listSG6 2HZ: not on the flood risk listSG6 2JA: not on the flood risk listSG6 2JB: not on the flood risk listSG6 2JE: not on the flood risk listSG6 2JF: not on the flood risk listSG6 2JJ: not on the flood risk listSG6 2JP: not on the flood risk listSG6 2JR: not on the flood risk listSG6 2JS: not on the flood risk listSG6 2JT: not on the flood risk listSG6 2JU: not on the flood risk listSG6 2JW: not on the flood risk listSG6 2JX: not on the flood risk listSG6 2JY: not on the flood risk listSG6 2JZ: not on the flood risk listSG6 2LA: not on the flood risk listSG6 2LB: not on the flood risk listSG6 2LD: not on the flood risk listSG6 2LE: not on the flood risk listSG6 2LF: not on the flood risk listSG6 2LG: not on the flood risk listSG6 2LJ: not on the flood risk listSG6 2LL: not on the flood risk listSG6 2LN: not on the flood risk listSG6 2LP: not on the flood risk listSG6 2LQ: not on the flood risk listSG6 2LR: not on the flood risk listSG6 2LS: not on the flood risk listSG6 2LT: not on the flood risk listSG6 2LU: not on the flood risk listSG6 2LY: not on the flood risk listSG6 2LZ: not on the flood risk listSG6 2NA: not on the flood risk listSG6 2NB: not on the flood risk listSG6 2ND: not on the flood risk listSG6 2NE: not on the flood risk listSG6 2NH: not on the flood risk listSG6 2NL: not on the flood risk listSG6 2NN: not on the flood risk listSG6 2NP: not on the flood risk listSG6 2NR: not on the flood risk listSG6 2NS: not on the flood risk listSG6 2NT: not on the flood risk listSG6 2NU: not on the flood risk listSG6 2NW: not on the flood risk listSG6 2NX: not on the flood risk listSG6 2NY: not on the flood risk listSG6 2NZ: not on the flood risk listSG6 2PA: not on the flood risk listSG6 2PB: not on the flood risk listSG6 2PD: not on the flood risk listSG6 2PE: not on the flood risk listSG6 2PG: not on the flood risk listSG6 2PH: not on the flood risk listSG6 2PJ: not on the flood risk listSG6 2PL: not on the flood risk listSG6 2PN: not on the flood risk listSG6 2PP: not on the flood risk listSG6 2PQ: not on the flood risk listSG6 2PR: not on the flood risk listSG6 2PT: not on the flood risk listSG6 2PU: not on the flood risk listSG6 2PW: not on the flood risk listSG6 2PX: not on the flood risk listSG6 2PY: not on the flood risk listSG6 2PZ: not on the flood risk listSG6 2QA: not on the flood risk listSG6 2QB: not on the flood risk listSG6 2QD: not on the flood risk listSG6 2QE: not on the flood risk listSG6 2QF: not on the flood risk listSG6 2QG: not on the flood risk listSG6 2QH: not on the flood risk listSG6 2QJ: not on the flood risk listSG6 2QL: not on the flood risk listSG6 2QN: not on the flood risk listSG6 2QP: not on the flood risk listSG6 2QQ: not on the flood risk listSG6 2QS: not on the flood risk listSG6 2QT: not on the flood risk listSG6 2QU: not on the flood risk listSG6 2QW: not on the flood risk listSG6 2QX: not on the flood risk listSG6 2QY: not on the flood risk listSG6 2QZ: not on the flood risk listSG6 2RA: not on the flood risk listSG6 2RB: not on the flood risk listSG6 2RE: not on the flood risk listSG6 2RF: not on the flood risk listSG6 2RG: not on the flood risk listSG6 2RH: not on the flood risk listSG6 2RJ: not on the flood risk listSG6 2RL: not on the flood risk listSG6 2RP: not on the flood risk listSG6 2RQ: not on the flood risk listSG6 2RR: not on the flood risk listSG6 2RS: not on the flood risk listSG6 2RT: not on the flood risk listSG6 2RU: not on the flood risk listSG6 2RX: not on the flood risk listSG6 2RY: not on the flood risk listSG6 2RZ: not on the flood risk listSG6 2SA: not on the flood risk listSG6 2SB: not on the flood risk listSG6 2SD: not on the flood risk listSG6 2SF: not on the flood risk listSG6 2SG: not on the flood risk listSG6 2SH: not on the flood risk listSG6 2SJ: not on the flood risk listSG6 2SL: not on the flood risk listSG6 2SN: not on the flood risk listSG6 2SP: not on the flood risk listSG6 2SQ: not on the flood risk listSG6 2SR: not on the flood risk listSG6 2SS: not on the flood risk listSG6 2ST: not on the flood risk listSG6 2SU: not on the flood risk listSG6 2SW: not on the flood risk listSG6 2SX: not on the flood risk listSG6 2SY: not on the flood risk listSG6 2SZ: not on the flood risk listSG6 2TA: not on the flood risk listSG6 2TB: not on the flood risk listSG6 2TD: not on the flood risk listSG6 2TE: not on the flood risk listSG6 2TG: not on the flood risk listSG6 2TH: not on the flood risk listSG6 2TJ: not on the flood risk listSG6 2TN: not on the flood risk listSG6 2TP: not on the flood risk listSG6 2TQ: not on the flood risk listSG6 2TR: not on the flood risk listSG6 2TS: not on the flood risk listSG6 2TT: not on the flood risk listSG6 2TU: not on the flood risk listSG6 2TW: not on the flood risk listSG6 2TX: not on the flood risk listSG6 2TY: not on the flood risk listSG6 2TZ: not on the flood risk listSG6 2UA: not on the flood risk listSG6 2UB: not on the flood risk listSG6 2UD: not on the flood risk listSG6 2WD: not on the flood risk listSG6 2WW: not on the flood risk listSG6 3AA: not on the flood risk listSG6 3AE: not on the flood risk listSG6 3AL: not on the flood risk listSG6 3AN: not on the flood risk listSG6 3AR: not on the flood risk listSG6 3AU: not on the flood risk listSG6 3AW: not on the flood risk listSG6 3AY: not on the flood risk listSG6 3BA: not on the flood risk listSG6 3BB: not on the flood risk listSG6 3BE: not on the flood risk listSG6 3BF: not on the flood risk listSG6 3BJ: not on the flood risk listSG6 3BL: not on the flood risk listSG6 3BQ: not on the flood risk listSG6 3BX: not on the flood risk listSG6 3BY: not on the flood risk listSG6 3DA: not on the flood risk listSG6 3DD: not on the flood risk listSG6 3DE: not on the flood risk listSG6 3DG: not on the flood risk listSG6 3DL: not on the flood risk listSG6 3DN: not on the flood risk listSG6 3DU: not on the flood risk listSG6 3DW: not on the flood risk listSG6 3DZ: not on the flood risk listSG6 3EA: not on the flood risk listSG6 3ED: not on the flood risk listSG6 3EF: not on the flood risk listSG6 3EG: not on the flood risk listSG6 3EJ: not on the flood risk listSG6 3EL: not on the flood risk listSG6 3EN: not on the flood risk listSG6 3EP: not on the flood risk listSG6 3EQ: not on the flood risk listSG6 3ES: not on the flood risk listSG6 3EW: not on the flood risk listSG6 3GY: not on the flood risk listSG6 3GZ: not on the flood risk listSG6 3HD: not on the flood risk listSG6 3HE: not on the flood risk listSG6 3HF: not on the flood risk listSG6 3HG: not on the flood risk listSG6 3HH: not on the flood risk listSG6 3HJ: not on the flood risk listSG6 3HL: not on the flood risk listSG6 3HQ: not on the flood risk listSG6 3HR: not on the flood risk listSG6 3HS: not on the flood risk listSG6 3HT: not on the flood risk listSG6 3HU: not on the flood risk listSG6 3HW: not on the flood risk listSG6 3HX: not on the flood risk listSG6 3HY: not on the flood risk listSG6 3HZ: not on the flood risk listSG6 3JA: not on the flood risk listSG6 3JB: not on the flood risk listSG6 3JD: not on the flood risk listSG6 3JE: not on the flood risk listSG6 3JF: not on the flood risk listSG6 3JH: not on the flood risk listSG6 3JJ: not on the flood risk listSG6 3JN: not on the flood risk listSG6 3JP: not on the flood risk listSG6 3JR: not on the flood risk listSG6 3JS: not on the flood risk listSG6 3JT: not on the flood risk listSG6 3JU: not on the flood risk listSG6 3JW: not on the flood risk listSG6 3JX: not on the flood risk listSG6 3JY: not on the flood risk listSG6 3JZ: not on the flood risk listSG6 3LB: not on the flood risk listSG6 3LD: not on the flood risk listSG6 3LE: not on the flood risk listSG6 3LF: not on the flood risk listSG6 3LL: not on the flood risk listSG6 3LN: not on the flood risk listSG6 3LP: not on the flood risk listSG6 3LR: not on the flood risk listSG6 3LS: not on the flood risk listSG6 3LT: not on the flood risk listSG6 3LU: not on the flood risk listSG6 3LW: not on the flood risk listSG6 3LX: not on the flood risk listSG6 3LY: not on the flood risk listSG6 3NA: not on the flood risk listSG6 3NB: not on the flood risk listSG6 3ND: not on the flood risk listSG6 3NE: not on the flood risk listSG6 3NF: not on the flood risk listSG6 3NG: not on the flood risk listSG6 3NH: not on the flood risk listSG6 3NJ: not on the flood risk listSG6 3NL: not on the flood risk listSG6 3NN: not on the flood risk listSG6 3NP: not on the flood risk listSG6 3NQ: not on the flood risk listSG6 3NR: not on the flood risk listSG6 3NW: not on the flood risk listSG6 3NX: not on the flood risk listSG6 3NZ: not on the flood risk listSG6 3PA: not on the flood risk listSG6 3PF: not on the flood risk listSG6 3PH: not on the flood risk listSG6 3PJ: not on the flood risk listSG6 3PL: not on the flood risk listSG6 3PN: not on the flood risk listSG6 3PQ: not on the flood risk listSG6 3PR: not on the flood risk listSG6 3PT: not on the flood risk listSG6 3PU: not on the flood risk listSG6 3PW: not on the flood risk listSG6 3PX: not on the flood risk listSG6 3PY: not on the flood risk listSG6 3PZ: not on the flood risk listSG6 3QA: not on the flood risk listSG6 3QB: not on the flood risk listSG6 3QD: not on the flood risk listSG6 3QJ: not on the flood risk listSG6 3QL: not on the flood risk listSG6 3QN: not on the flood risk listSG6 3QP: not on the flood risk listSG6 3QR: not on the flood risk listSG6 3QS: not on the flood risk listSG6 3QT: not on the flood risk listSG6 3QU: not on the flood risk listSG6 3QW: not on the flood risk listSG6 3QX: not on the flood risk listSG6 3QY: not on the flood risk listSG6 3QZ: not on the flood risk listSG6 3RA: not on the flood risk listSG6 3RB: not on the flood risk listSG6 3RD: not on the flood risk listSG6 3RE: not on the flood risk listSG6 3RF: not on the flood risk listSG6 3RG: not on the flood risk listSG6 3RH: not on the flood risk listSG6 3RL: not on the flood risk listSG6 3RN: not on the flood risk listSG6 3RP: not on the flood risk listSG6 3RQ: not on the flood risk listSG6 3RR: not on the flood risk listSG6 3RS: not on the flood risk listSG6 3RT: not on the flood risk listSG6 3RU: not on the flood risk listSG6 3RW: not on the flood risk listSG6 3SA: not on the flood risk listSG6 3SB: not on the flood risk listSG6 3SD: not on the flood risk listSG6 3SE: not on the flood risk listSG6 3SF: not on the flood risk listSG6 3SG: not on the flood risk listSG6 3SH: not on the flood risk listSG6 3SJ: not on the flood risk listSG6 3SL: not on the flood risk listSG6 3SP: not on the flood risk listSG6 3SQ: not on the flood risk listSG6 3SR: not on the flood risk listSG6 3SS: not on the flood risk listSG6 3ST: not on the flood risk listSG6 3TA: not on the flood risk listSG6 3TB: not on the flood risk listSG6 3TG: not on the flood risk listSG6 3TH: not on the flood risk listSG6 3TP: not on the flood risk listSG6 3TQ: not on the flood risk listSG6 3TR: not on the flood risk listSG6 3TS: not on the flood risk listSG6 3TU: not on the flood risk listSG6 3TX: not on the flood risk listSG6 3TY: not on the flood risk listSG6 3TZ: not on the flood risk listSG6 3UA: not on the flood risk listSG6 3UB: not on the flood risk listSG6 3UD: not on the flood risk listSG6 3UE: not on the flood risk listSG6 3UF: not on the flood risk listSG6 3UG: not on the flood risk listSG6 3WA: not on the flood risk listSG6 3XY: not on the flood risk listSG6 4AA: not on the flood risk listSG6 4AD: not on the flood risk listSG6 4AE: not on the flood risk listSG6 4AL: not on the flood risk listSG6 4AN: not on the flood risk listSG6 4AR: not on the flood risk listSG6 4AT: not on the flood risk listSG6 4AU: not on the flood risk listSG6 4AW: not on the flood risk listSG6 4AX: not on the flood risk listSG6 4AZ: not on the flood risk listSG6 4BD: not on the flood risk listSG6 4BE: not on the flood risk listSG6 4BG: not on the flood risk listSG6 4BH: not on the flood risk listSG6 4BJ: not on the flood risk listSG6 4BL: not on the flood risk listSG6 4BN: not on the flood risk listSG6 4BP: not on the flood risk listSG6 4BS: not on the flood risk listSG6 4BW: not on the flood risk listSG6 4BY: not on the flood risk listSG6 4BZ: not on the flood risk listSG6 4DA: not on the flood risk listSG6 4DB: not on the flood risk listSG6 4DD: not on the flood risk listSG6 4DE: not on the flood risk listSG6 4DF: not on the flood risk listSG6 4DG: not on the flood risk listSG6 4DJ: not on the flood risk listSG6 4DL: not on the flood risk listSG6 4DN: not on the flood risk listSG6 4DP: not on the flood risk listSG6 4DQ: not on the flood risk listSG6 4DR: not on the flood risk listSG6 4DS: not on the flood risk listSG6 4DT: not on the flood risk listSG6 4DU: not on the flood risk listSG6 4DW: not on the flood risk listSG6 4DX: not on the flood risk listSG6 4DY: not on the flood risk listSG6 4DZ: not on the flood risk listSG6 4EA: not on the flood risk listSG6 4EB: not on the flood risk listSG6 4ED: not on the flood risk listSG6 4EE: not on the flood risk listSG6 4EF: not on the flood risk listSG6 4EG: not on the flood risk listSG6 4EH: not on the flood risk listSG6 4EJ: not on the flood risk listSG6 4EN: not on the flood risk listSG6 4EQ: not on the flood risk listSG6 4ER: not on the flood risk listSG6 4ES: not on the flood risk listSG6 4ET: not on the flood risk listSG6 4EX: not on the flood risk listSG6 4EY: not on the flood risk listSG6 4EZ: not on the flood risk listSG6 4FA: not on the flood risk listSG6 4FW: not on the flood risk listSG6 4GY: not on the flood risk listSG6 4HE: not on the flood risk listSG6 4HF: not on the flood risk listSG6 4HG: not on the flood risk listSG6 4HH: not on the flood risk listSG6 4HJ: not on the flood risk listSG6 4HL: not on the flood risk listSG6 4HN: not on the flood risk listSG6 4HP: not on the flood risk listSG6 4HQ: not on the flood risk listSG6 4HR: not on the flood risk listSG6 4HS: not on the flood risk listSG6 4HT: not on the flood risk listSG6 4HW: not on the flood risk listSG6 4HY: not on the flood risk listSG6 4HZ: not on the flood risk listSG6 4JA: not on the flood risk listSG6 4JB: not on the flood risk listSG6 4JD: not on the flood risk listSG6 4JE: not on the flood risk listSG6 4JF: not on the flood risk listSG6 4JG: not on the flood risk listSG6 4JH: not on the flood risk listSG6 4JJ: not on the flood risk listSG6 4JL: not on the flood risk listSG6 4JN: not on the flood risk listSG6 4JQ: not on the flood risk listSG6 4JR: not on the flood risk listSG6 4JS: not on the flood risk listSG6 4JT: not on the flood risk listSG6 4JU: not on the flood risk listSG6 4JW: not on the flood risk listSG6 4JX: not on the flood risk listSG6 4JY: not on the flood risk listSG6 4JZ: not on the flood risk listSG6 4LA: not on the flood risk listSG6 4LB: not on the flood risk listSG6 4LD: not on the flood risk listSG6 4LF: not on the flood risk listSG6 4LG: not on the flood risk listSG6 4LH: not on the flood risk listSG6 4LJ: not on the flood risk listSG6 4LL: not on the flood risk listSG6 4LN: not on the flood risk listSG6 4LP: not on the flood risk listSG6 4LQ: not on the flood risk listSG6 4LR: not on the flood risk listSG6 4LS: not on the flood risk listSG6 4LT: not on the flood risk listSG6 4LU: not on the flood risk listSG6 4LW: not on the flood risk listSG6 4LX: not on the flood risk listSG6 4LY: not on the flood risk listSG6 4LZ: not on the flood risk listSG6 4NA: not on the flood risk listSG6 4NB: not on the flood risk listSG6 4ND: not on the flood risk listSG6 4NE: not on the flood risk listSG6 4NF: not on the flood risk listSG6 4NG: not on the flood risk listSG6 4NH: not on the flood risk listSG6 4NL: not on the flood risk listSG6 4NN: not on the flood risk listSG6 4NP: not on the flood risk listSG6 4NQ: not on the flood risk listSG6 4NR: not on the flood risk listSG6 4NS: not on the flood risk listSG6 4NT: not on the flood risk listSG6 4NW: not on the flood risk listSG6 4NZ: not on the flood risk listSG6 4PA: not on the flood risk listSG6 4PB: not on the flood risk listSG6 4PD: not on the flood risk listSG6 4PF: not on the flood risk listSG6 4PG: not on the flood risk listSG6 4PH: not on the flood risk listSG6 4PJ: not on the flood risk listSG6 4PL: not on the flood risk listSG6 4PN: not on the flood risk listSG6 4PP: not on the flood risk listSG6 4PQ: not on the flood risk listSG6 4PR: not on the flood risk listSG6 4PS: not on the flood risk listSG6 4PT: not on the flood risk listSG6 4PU: not on the flood risk listSG6 4PX: not on the flood risk listSG6 4PY: not on the flood risk listSG6 4PZ: not on the flood risk listSG6 4QA: not on the flood risk listSG6 4QB: not on the flood risk listSG6 4QD: not on the flood risk listSG6 4QE: not on the flood risk listSG6 4QF: not on the flood risk listSG6 4QH: not on the flood risk listSG6 4QJ: not on the flood risk listSG6 4QL: not on the flood risk listSG6 4QN: not on the flood risk listSG6 4QP: not on the flood risk listSG6 4QR: not on the flood risk listSG6 4QS: not on the flood risk listSG6 4QT: not on the flood risk listSG6 4QU: not on the flood risk listSG6 4QW: not on the flood risk listSG6 4QX: not on the flood risk listSG6 4QY: not on the flood risk listSG6 4QZ: not on the flood risk listSG6 4RA: not on the flood risk listSG6 4RB: not on the flood risk listSG6 4RD: not on the flood risk listSG6 4RE: not on the flood risk listSG6 4RF: not on the flood risk listSG6 4RG: not on the flood risk listSG6 4RH: not on the flood risk listSG6 4RJ: not on the flood risk listSG6 4RL: not on the flood risk listSG6 4RN: not on the flood risk listSG6 4RP: not on the flood risk listSG6 4RQ: not on the flood risk listSG6 4RR: not on the flood risk listSG6 4RS: not on the flood risk listSG6 4RW: not on the flood risk listSG6 4RX: not on the flood risk listSG6 4RY: not on the flood risk listSG6 4RZ: not on the flood risk listSG6 4SA: not on the flood risk listSG6 4SB: not on the flood risk listSG6 4SE: not on the flood risk listSG6 4SF: not on the flood risk listSG6 4SG: not on the flood risk listSG6 4SH: not on the flood risk listSG6 4SJ: not on the flood risk listSG6 4SL: not on the flood risk listSG6 4SN: not on the flood risk listSG6 4SP: not on the flood risk listSG6 4SQ: not on the flood risk listSG6 4SR: not on the flood risk listSG6 4SS: not on the flood risk listSG6 4ST: not on the flood risk listSG6 4SU: not on the flood risk listSG6 4SW: not on the flood risk listSG6 4SX: not on the flood risk listSG6 4SY: not on the flood risk listSG6 4SZ: not on the flood risk listSG6 4TA: not on the flood risk listSG6 4TB: not on the flood risk listSG6 4TD: not on the flood risk listSG6 4TF: not on the flood risk listSG6 4TG: not on the flood risk listSG6 4TH: not on the flood risk listSG6 4TJ: not on the flood risk listSG6 4TL: not on the flood risk listSG6 4TN: not on the flood risk listSG6 4TQ: not on the flood risk listSG6 4TR: not on the flood risk listSG6 4TS: not on the flood risk listSG6 4TT: not on the flood risk listSG6 4TU: not on the flood risk listSG6 4TW: not on the flood risk listSG6 4TX: not on the flood risk listSG6 4TY: not on the flood risk listSG6 4TZ: not on the flood risk listSG6 4UA: not on the flood risk listSG6 4UB: not on the flood risk listSG6 4UD: not on the flood risk listSG6 4UF: not on the flood risk listSG6 4UG: not on the flood risk listSG6 4UJ: not on the flood risk listSG6 4UL: not on the flood risk listSG6 4UN: not on the flood risk listSG6 4UP: not on the flood risk listSG6 4UR: not on the flood risk listSG6 4UT: not on the flood risk listSG6 4UU: not on the flood risk listSG6 4UW: not on the flood risk listSG6 4UX: not on the flood risk listSG6 4UY: not on the flood risk listSG6 4UZ: not on the flood risk listSG6 4WA: not on the flood risk listSG6 4XA: not on the flood risk listSG6 4XB: not on the flood risk listSG6 4XD: not on the flood risk listSG6 4XE: not on the flood risk listSG6 4XF: not on the flood risk listSG6 4XG: not on the flood risk listSG6 4XH: not on the flood risk listSG6 4XJ: not on the flood risk listSG6 4XN: not on the flood risk listSG6 4XP: not on the flood risk listSG6 4XQ: not on the flood risk listSG6 4XR: not on the flood risk listSG6 4XS: not on the flood risk listSG6 4XT: not on the flood risk listSG6 4XU: not on the flood risk listSG6 4XX: not on the flood risk listSG6 4XY: not on the flood risk listSG6 4XZ: not on the flood risk listSG6 4YE: not on the flood risk listSG6 4YF: not on the flood risk listSG6 4YH: not on the flood risk listSG6 4YJ: not on the flood risk listSG6 4YL: not on the flood risk listSG6 4YN: not on the flood risk listSG6 4YQ: not on the flood risk listSG6 9SA: not on the flood risk listSG6 1BH: low flood risk at worstSG6 1FG: low flood risk at worstSG6 1PQ: low flood risk at worstSG6 1SF: low flood risk at worstSG6 1SU: low flood risk at worstSG6 4UE: low flood risk at worstSG6 1QP: medium flood risk at worstSG6 1AN: high flood riskSG6 1QS: high flood riskSG6 1RS: high flood riskSG6 1SQ: high flood risk Letchworth Map of every postcode in SG6, by flood risk Of the 978 postcodes in SG6 that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 967 are not on the Environment Agency's at-risk list. Places named: Letchworth. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Letchworth
  • A home or business at high risk: 4
  • At medium risk at worst: 1
  • At low risk at worst: 6
  • At very low risk only: 0
  • Not on the at-risk list: 967

Of the 978 postcodes in SG6 that ONS places, 4 have a home or business at high risk, 1 are at medium risk at worst, 6 are at low risk at worst and 967 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 51.9790, longitude -0.2227. 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.

SG6 1RS20 at high riskSG6 1SQ2 at high riskSG6 1AN2 at high riskSG6 1QS1 at high risk

What broadband can you get in SG6?

Ofcom reports on 902 of the 978 postcodes in SG6. At 742 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit742 of 902
Postcodes where every home can get superfast862 of 902

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 SG6 at risk of flooding?

11 of the 978 postcodes in SG6 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 27 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 11 of 978 postcodes High: 25Medium: 2Low: 17

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 SG6?

Homes in SG6 sold for a typical £400,000 in the 12 months to August 2026, across 302 sales, up 4.6% on the 12 months before, HM Land Registry's figures show.

£400,000 typical price, the 12 months to August 2026
£382,500 12 months to August 2025
▲ up 4.6% on the 12 months before
  • Detached £652,500 74 sales
  • Semi-detached £505,000 61 sales
  • Terraced £350,000 106 sales
  • Flat or maisonette £210,000 61 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 SG6

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

SG6 1217 postcodesSG6 2232 postcodesSG6 3195 postcodesSG6 4268 postcodesSG6 966 postcodes
UK postcode format explained

Places in SG6

Towns and villages with postcodes in SG6, and how many each has here.

Letchworth postcodes,961Baldock postcodes,9Stotfold postcodes,1

Who covers SG6

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

  • North East Hertfordshire975
  • Hitchin3

Police force areas

  • Hertfordshire977
  • Bedfordshire1

Next to SG6

SG5 postcode district SG7 postcode district All SG districts Letchworth postcodes

"Next to" is by number: the districts before and after SG6 in the SG area.

Check a postcode

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