SG5 postcode district: Hitchin and around

SG5 is a postcode district mostly in Hertfordshire, with 952 postcodes in use in 5 sectors. It has postcodes in Hitchin, Stotfold, Ickleford and 2 more places. It is split between 3 councils: North Hertfordshire (610 postcodes), Central Bedfordshire (323) and Stevenage (19). 629 are in Hertfordshire. ONS lists no county for the other 323.

Postcodes in use
952
Sectors
5
Councils
3 councils
Places
5 places

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

Every postcode in SG5, by flood risk

Map of every postcode in SG5, by flood risk Of the 952 postcodes in SG5 that ONS places, 18 have a home or business at high risk, 10 are at medium risk at worst, 27 are at low risk at worst and 897 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Hitchin, Letchworth, Stotfold, Lower Stondon, Arlesey, Henlow. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A507A602 SG5 1AB: not on the flood risk listSG5 1AG: not on the flood risk listSG5 1AP: not on the flood risk listSG5 1AT: not on the flood risk listSG5 1AU: not on the flood risk listSG5 1AZ: not on the flood risk listSG5 1BG: not on the flood risk listSG5 1BS: not on the flood risk listSG5 1BT: not on the flood risk listSG5 1DL: not on the flood risk listSG5 1DX: not on the flood risk listSG5 1EE: not on the flood risk listSG5 1EP: not on the flood risk listSG5 1ET: not on the flood risk listSG5 1EX: not on the flood risk listSG5 1EY: not on the flood risk listSG5 1FU: not on the flood risk listSG5 1GB: not on the flood risk listSG5 1GE: not on the flood risk listSG5 1HA: not on the flood risk listSG5 1HB: not on the flood risk listSG5 1HF: not on the flood risk listSG5 1HP: not on the flood risk listSG5 1HX: not on the flood risk listSG5 1JA: not on the flood risk listSG5 1JB: not on the flood risk listSG5 1JD: not on the flood risk listSG5 1JJ: not on the flood risk listSG5 1JX: not on the flood risk listSG5 1LF: not on the flood risk listSG5 1LJ: not on the flood risk listSG5 1NS: not on the flood risk listSG5 1NU: not on the flood risk listSG5 1NW: not on the flood risk listSG5 1NZ: not on the flood risk listSG5 1PA: not on the flood risk listSG5 1PB: not on the flood risk listSG5 1PD: not on the flood risk listSG5 1PE: not on the flood risk listSG5 1PF: not on the flood risk listSG5 1PG: not on the flood risk listSG5 1PH: not on the flood risk listSG5 1PJ: not on the flood risk listSG5 1PT: not on the flood risk listSG5 1PZ: not on the flood risk listSG5 1QG: not on the flood risk listSG5 1QH: not on the flood risk listSG5 1QJ: not on the flood risk listSG5 1QN: not on the flood risk listSG5 1RA: not on the flood risk listSG5 1RP: not on the flood risk listSG5 1RQ: not on the flood risk listSG5 1RS: not on the flood risk listSG5 1RW: not on the flood risk listSG5 1SH: not on the flood risk listSG5 1SJ: not on the flood risk listSG5 1SN: not on the flood risk listSG5 1SP: not on the flood risk listSG5 1SS: not on the flood risk listSG5 1ST: not on the flood risk listSG5 1SU: not on the flood risk listSG5 1SY: not on the flood risk listSG5 1TB: not on the flood risk listSG5 1TE: not on the flood risk listSG5 1TJ: not on the flood risk listSG5 1TR: not on the flood risk listSG5 1TX: not on the flood risk listSG5 1TZ: not on the flood risk listSG5 1UA: not on the flood risk listSG5 1UB: not on the flood risk listSG5 1UD: not on the flood risk listSG5 1UE: not on the flood risk listSG5 1UF: not on the flood risk listSG5 1UG: not on the flood risk listSG5 1UN: not on the flood risk listSG5 1UP: not on the flood risk listSG5 1UR: not on the flood risk listSG5 1XB: not on the flood risk listSG5 1XE: not on the flood risk listSG5 1XF: not on the flood risk listSG5 1XG: not on the flood risk listSG5 1XH: not on the flood risk listSG5 1XJ: not on the flood risk listSG5 1XL: not on the flood risk listSG5 1XR: not on the flood risk listSG5 1XS: not on the flood risk listSG5 1XT: not on the flood risk listSG5 1XZ: not on the flood risk listSG5 1YB: not on the flood risk listSG5 2AA: not on the flood risk listSG5 2AE: not on the flood risk listSG5 2AJ: not on the flood risk listSG5 2AN: not on the flood risk listSG5 2AS: not on the flood risk listSG5 2AT: not on the flood risk listSG5 2AY: not on the flood risk listSG5 2AZ: not on the flood risk listSG5 2BA: not on the flood risk listSG5 2BB: not on the flood risk listSG5 2BD: not on the flood risk listSG5 2BG: not on the flood risk listSG5 2BH: not on the flood risk listSG5 2BL: not on the flood risk listSG5 2BN: not on the flood risk listSG5 2BS: not on the flood risk listSG5 2BT: not on the flood risk listSG5 2BU: not on the flood risk listSG5 2BW: not on the flood risk listSG5 2BY: not on the flood risk listSG5 2BZ: not on the flood risk listSG5 2DT: not on the flood risk listSG5 2DX: not on the flood risk listSG5 2EA: not on the flood risk listSG5 2EE: not on the flood risk listSG5 2EF: not on the flood risk listSG5 2EN: not on the flood risk listSG5 2EP: not on the flood risk listSG5 2EQ: not on the flood risk listSG5 2ES: not on the flood risk listSG5 2EU: not on the flood risk listSG5 2HB: not on the flood risk listSG5 2HE: not on the flood risk listSG5 2HF: not on the flood risk listSG5 2HJ: not on the flood risk listSG5 2HL: not on the flood risk listSG5 2HP: not on the flood risk listSG5 2HR: not on the flood risk listSG5 2HS: not on the flood risk listSG5 2HW: not on the flood risk listSG5 2HY: not on the flood risk listSG5 2HZ: not on the flood risk listSG5 2JA: not on the flood risk listSG5 2JB: not on the flood risk listSG5 2JE: not on the flood risk listSG5 2JG: not on the flood risk listSG5 2JJ: not on the flood risk listSG5 2JT: not on the flood risk listSG5 2LD: not on the flood risk listSG5 2LG: not on the flood risk listSG5 2LJ: not on the flood risk listSG5 2LL: not on the flood risk listSG5 2LQ: not on the flood risk listSG5 2LR: not on the flood risk listSG5 2LU: not on the flood risk listSG5 2NA: not on the flood risk listSG5 2NB: not on the flood risk listSG5 2ND: not on the flood risk listSG5 2NG: not on the flood risk listSG5 2NH: not on the flood risk listSG5 2NL: not on the flood risk listSG5 2NP: not on the flood risk listSG5 2NU: not on the flood risk listSG5 2NW: not on the flood risk listSG5 2NZ: not on the flood risk listSG5 2PA: not on the flood risk listSG5 2PB: not on the flood risk listSG5 2PF: not on the flood risk listSG5 2PH: not on the flood risk listSG5 2PP: not on the flood risk listSG5 2PR: not on the flood risk listSG5 2PT: not on the flood risk listSG5 2QE: not on the flood risk listSG5 2QP: not on the flood risk listSG5 2QT: not on the flood risk listSG5 2QW: not on the flood risk listSG5 2QY: not on the flood risk listSG5 2QZ: not on the flood risk listSG5 2RA: not on the flood risk listSG5 2RD: not on the flood risk listSG5 2RL: not on the flood risk listSG5 2RR: not on the flood risk listSG5 2SA: not on the flood risk listSG5 2SB: not on the flood risk listSG5 2SF: not on the flood risk listSG5 2SG: not on the flood risk listSG5 2SH: not on the flood risk listSG5 2SJ: not on the flood risk listSG5 2SQ: not on the flood risk listSG5 2SR: not on the flood risk listSG5 2SY: not on the flood risk listSG5 2SZ: not on the flood risk listSG5 2TA: not on the flood risk listSG5 2TB: not on the flood risk listSG5 2TE: not on the flood risk listSG5 2TF: not on the flood risk listSG5 2TJ: not on the flood risk listSG5 2TQ: not on the flood risk listSG5 2TT: not on the flood risk listSG5 2TZ: not on the flood risk listSG5 2UD: not on the flood risk listSG5 2UE: not on the flood risk listSG5 2UF: not on the flood risk listSG5 2UH: not on the flood risk listSG5 2UJ: not on the flood risk listSG5 2UN: not on the flood risk listSG5 2UP: not on the flood risk listSG5 2UQ: not on the flood risk listSG5 2UR: not on the flood risk listSG5 2UU: not on the flood risk listSG5 2UY: not on the flood risk listSG5 2UZ: not on the flood risk listSG5 2WZ: not on the flood risk listSG5 2XE: not on the flood risk listSG5 2XH: not on the flood risk listSG5 2XL: not on the flood risk listSG5 2XP: not on the flood risk listSG5 3AA: not on the flood risk listSG5 3AG: not on the flood risk listSG5 3AH: not on the flood risk listSG5 3AJ: not on the flood risk listSG5 3AS: not on the flood risk listSG5 3AT: not on the flood risk listSG5 3AW: not on the flood risk listSG5 3AX: not on the flood risk listSG5 3AZ: not on the flood risk listSG5 3BG: not on the flood risk listSG5 3BH: not on the flood risk listSG5 3BJ: not on the flood risk listSG5 3BL: not on the flood risk listSG5 3BN: not on the flood risk listSG5 3BP: not on the flood risk listSG5 3BQ: not on the flood risk listSG5 3BS: not on the flood risk listSG5 3BU: not on the flood risk listSG5 3BX: not on the flood risk listSG5 3BY: not on the flood risk listSG5 3BZ: not on the flood risk listSG5 3DA: not on the flood risk listSG5 3DB: not on the flood risk listSG5 3DE: not on the flood risk listSG5 3DF: not on the flood risk listSG5 3DG: not on the flood risk listSG5 3DH: not on the flood risk listSG5 3DJ: not on the flood risk listSG5 3DN: not on the flood risk listSG5 3DP: not on the flood risk listSG5 3DQ: not on the flood risk listSG5 3DR: not on the flood risk listSG5 3DT: not on the flood risk listSG5 3DU: not on the flood risk listSG5 3DW: not on the flood risk listSG5 3DX: not on the flood risk listSG5 3DY: not on the flood risk listSG5 3DZ: not on the flood risk listSG5 3EB: not on the flood risk listSG5 3ED: not on the flood risk listSG5 3EE: not on the flood risk listSG5 3EF: not on the flood risk listSG5 3EG: not on the flood risk listSG5 3EJ: not on the flood risk listSG5 3EL: not on the flood risk listSG5 3EQ: not on the flood risk listSG5 3ES: not on the flood risk listSG5 3ET: not on the flood risk listSG5 3EU: not on the flood risk listSG5 3EX: not on the flood risk listSG5 3EY: not on the flood risk listSG5 3FA: not on the flood risk listSG5 3FJ: not on the flood risk listSG5 3FN: not on the flood risk listSG5 3FR: not on the flood risk listSG5 3FS: not on the flood risk listSG5 3FT: not on the flood risk listSG5 3FW: not on the flood risk listSG5 3FX: not on the flood risk listSG5 3GG: not on the flood risk listSG5 3HB: not on the flood risk listSG5 3HD: not on the flood risk listSG5 3HE: not on the flood risk listSG5 3HG: not on the flood risk listSG5 3HH: not on the flood risk listSG5 3HJ: not on the flood risk listSG5 3HL: not on the flood risk listSG5 3HP: not on the flood risk listSG5 3HQ: not on the flood risk listSG5 3HR: not on the flood risk listSG5 3HS: not on the flood risk listSG5 3HT: not on the flood risk listSG5 3HX: not on the flood risk listSG5 3HZ: not on the flood risk listSG5 3JA: not on the flood risk listSG5 3JB: not on the flood risk listSG5 3JD: not on the flood risk listSG5 3JE: not on the flood risk listSG5 3JF: not on the flood risk listSG5 3JG: not on the flood risk listSG5 3JH: not on the flood risk listSG5 3JJ: not on the flood risk listSG5 3JN: not on the flood risk listSG5 3JP: not on the flood risk listSG5 3JR: not on the flood risk listSG5 3JS: not on the flood risk listSG5 3JT: not on the flood risk listSG5 3JU: not on the flood risk listSG5 3JZ: not on the flood risk listSG5 3LA: not on the flood risk listSG5 3LB: not on the flood risk listSG5 3LD: not on the flood risk listSG5 3LE: not on the flood risk listSG5 3LH: not on the flood risk listSG5 3LJ: not on the flood risk listSG5 3LL: not on the flood risk listSG5 3LP: not on the flood risk listSG5 3LR: not on the flood risk listSG5 3LT: not on the flood risk listSG5 3LU: not on the flood risk listSG5 3LX: not on the flood risk listSG5 3LY: not on the flood risk listSG5 3LZ: not on the flood risk listSG5 3NA: not on the flood risk listSG5 3ND: not on the flood risk listSG5 3NH: not on the flood risk listSG5 3NJ: not on the flood risk listSG5 3NL: not on the flood risk listSG5 3NN: not on the flood risk listSG5 3NP: not on the flood risk listSG5 3NT: not on the flood risk listSG5 3NX: not on the flood risk listSG5 3NZ: not on the flood risk listSG5 3PA: not on the flood risk listSG5 3PB: not on the flood risk listSG5 3PD: not on the flood risk listSG5 3PF: not on the flood risk listSG5 3PG: not on the flood risk listSG5 3PH: not on the flood risk listSG5 3PL: not on the flood risk listSG5 3PN: not on the flood risk listSG5 3PR: not on the flood risk listSG5 3PS: not on the flood risk listSG5 3PT: not on the flood risk listSG5 3PU: not on the flood risk listSG5 3PZ: not on the flood risk listSG5 3QA: not on the flood risk listSG5 3QD: not on the flood risk listSG5 3QE: not on the flood risk listSG5 3QG: not on the flood risk listSG5 3QH: not on the flood risk listSG5 3QN: not on the flood risk listSG5 3QP: not on the flood risk listSG5 3QS: not on the flood risk listSG5 3QT: not on the flood risk listSG5 3QU: not on the flood risk listSG5 3QX: not on the flood risk listSG5 3QZ: not on the flood risk listSG5 3RA: not on the flood risk listSG5 3RB: not on the flood risk listSG5 3RG: not on the flood risk listSG5 3RN: not on the flood risk listSG5 3RP: not on the flood risk listSG5 3RR: not on the flood risk listSG5 3RS: not on the flood risk listSG5 3RT: not on the flood risk listSG5 3RU: not on the flood risk listSG5 3RZ: not on the flood risk listSG5 3SB: not on the flood risk listSG5 3SD: not on the flood risk listSG5 3SG: not on the flood risk listSG5 3SH: not on the flood risk listSG5 3SJ: not on the flood risk listSG5 3SL: not on the flood risk listSG5 3SN: not on the flood risk listSG5 3SP: not on the flood risk listSG5 3SS: not on the flood risk listSG5 3ST: not on the flood risk listSG5 3SU: not on the flood risk listSG5 3SW: not on the flood risk listSG5 3TE: not on the flood risk listSG5 3TH: not on the flood risk listSG5 3TJ: not on the flood risk listSG5 3TN: not on the flood risk listSG5 3TP: not on the flood risk listSG5 3TR: not on the flood risk listSG5 3TS: not on the flood risk listSG5 3TU: not on the flood risk listSG5 3UA: not on the flood risk listSG5 3UB: not on the flood risk listSG5 3UF: not on the flood risk listSG5 3UN: not on the flood risk listSG5 3UR: not on the flood risk listSG5 3UW: not on the flood risk listSG5 3XB: not on the flood risk listSG5 3XD: not on the flood risk listSG5 3XH: not on the flood risk listSG5 3XJ: not on the flood risk listSG5 3XN: not on the flood risk listSG5 3XP: not on the flood risk listSG5 3XR: not on the flood risk listSG5 3XS: not on the flood risk listSG5 3XT: not on the flood risk listSG5 3XX: not on the flood risk listSG5 3XY: not on the flood risk listSG5 3XZ: not on the flood risk listSG5 3YD: not on the flood risk listSG5 3YE: not on the flood risk listSG5 3YG: not on the flood risk listSG5 3YL: not on the flood risk listSG5 3YR: not on the flood risk listSG5 4AF: not on the flood risk listSG5 4AH: not on the flood risk listSG5 4AJ: not on the flood risk listSG5 4AL: not on the flood risk listSG5 4AN: not on the flood risk listSG5 4AP: not on the flood risk listSG5 4AQ: not on the flood risk listSG5 4AT: not on the flood risk listSG5 4AU: not on the flood risk listSG5 4AW: not on the flood risk listSG5 4BA: not on the flood risk listSG5 4BE: not on the flood risk listSG5 4BF: not on the flood risk listSG5 4BG: not on the flood risk listSG5 4BH: not on the flood risk listSG5 4BN: not on the flood risk listSG5 4BP: not on the flood risk listSG5 4BQ: not on the flood risk listSG5 4BS: not on the flood risk listSG5 4BU: not on the flood risk listSG5 4BY: not on the flood risk listSG5 4DD: not on the flood risk listSG5 4DE: not on the flood risk listSG5 4DF: not on the flood risk listSG5 4DG: not on the flood risk listSG5 4DH: not on the flood risk listSG5 4DJ: not on the flood risk listSG5 4DL: not on the flood risk listSG5 4DQ: not on the flood risk listSG5 4DS: not on the flood risk listSG5 4DZ: not on the flood risk listSG5 4EA: not on the flood risk listSG5 4EB: not on the flood risk listSG5 4ED: not on the flood risk listSG5 4EE: not on the flood risk listSG5 4EF: not on the flood risk listSG5 4EG: not on the flood risk listSG5 4EH: not on the flood risk listSG5 4EJ: not on the flood risk listSG5 4EL: not on the flood risk listSG5 4EN: not on the flood risk listSG5 4EP: not on the flood risk listSG5 4EQ: not on the flood risk listSG5 4ER: not on the flood risk listSG5 4ES: not on the flood risk listSG5 4ET: not on the flood risk listSG5 4EW: not on the flood risk listSG5 4EX: not on the flood risk listSG5 4EY: not on the flood risk listSG5 4FA: not on the flood risk listSG5 4FB: not on the flood risk listSG5 4FD: not on the flood risk listSG5 4FE: not on the flood risk listSG5 4FF: not on the flood risk listSG5 4FG: not on the flood risk listSG5 4FJ: not on the flood risk listSG5 4FL: not on the flood risk listSG5 4FN: not on the flood risk listSG5 4FP: not on the flood risk listSG5 4FR: not on the flood risk listSG5 4FS: not on the flood risk listSG5 4FU: not on the flood risk listSG5 4FW: not on the flood risk listSG5 4FX: not on the flood risk listSG5 4GB: not on the flood risk listSG5 4GD: not on the flood risk listSG5 4GE: not on the flood risk listSG5 4GG: not on the flood risk listSG5 4GJ: not on the flood risk listSG5 4GL: not on the flood risk listSG5 4GP: not on the flood risk listSG5 4GR: not on the flood risk listSG5 4GU: not on the flood risk listSG5 4GW: not on the flood risk listSG5 4HA: not on the flood risk listSG5 4HB: not on the flood risk listSG5 4HE: not on the flood risk listSG5 4HF: not on the flood risk listSG5 4HG: not on the flood risk listSG5 4HH: not on the flood risk listSG5 4HJ: not on the flood risk listSG5 4HR: not on the flood risk listSG5 4HT: not on the flood risk listSG5 4HU: not on the flood risk listSG5 4HX: not on the flood risk listSG5 4HY: not on the flood risk listSG5 4JA: not on the flood risk listSG5 4JE: not on the flood risk listSG5 4JH: not on the flood risk listSG5 4JL: not on the flood risk listSG5 4JQ: not on the flood risk listSG5 4JS: not on the flood risk listSG5 4JW: not on the flood risk listSG5 4LD: not on the flood risk listSG5 4LE: not on the flood risk listSG5 4LH: not on the flood risk listSG5 4LJ: not on the flood risk listSG5 4LL: not on the flood risk listSG5 4LQ: not on the flood risk listSG5 4LS: not on the flood risk listSG5 4LU: not on the flood risk listSG5 4LY: not on the flood risk listSG5 4LZ: not on the flood risk listSG5 4NA: not on the flood risk listSG5 4NB: not on the flood risk listSG5 4NE: not on the flood risk listSG5 4NG: not on the flood risk listSG5 4NJ: not on the flood risk listSG5 4NR: not on the flood risk listSG5 4NT: not on the flood risk listSG5 4NX: not on the flood risk listSG5 4NY: not on the flood risk listSG5 4NZ: not on the flood risk listSG5 4PB: not on the flood risk listSG5 4PD: not on the flood risk listSG5 4PF: not on the flood risk listSG5 4PG: not on the flood risk listSG5 4PH: not on the flood risk listSG5 4PL: not on the flood risk listSG5 4PN: not on the flood risk listSG5 4PR: not on the flood risk listSG5 4PW: not on the flood risk listSG5 4PZ: not on the flood risk listSG5 4QD: not on the flood risk listSG5 4QT: not on the flood risk listSG5 4QU: not on the flood risk listSG5 4QY: not on the flood risk listSG5 4RS: not on the flood risk listSG5 4RU: not on the flood risk listSG5 4RY: not on the flood risk listSG5 4RZ: not on the flood risk listSG5 4SA: not on the flood risk listSG5 4SB: not on the flood risk listSG5 4SE: not on the flood risk listSG5 4SF: not on the flood risk listSG5 4SG: not on the flood risk listSG5 4SJ: not on the flood risk listSG5 4SL: not on the flood risk listSG5 4SN: not on the flood risk listSG5 4SP: not on the flood risk listSG5 4SS: not on the flood risk listSG5 4SW: not on the flood risk listSG5 4SX: not on the flood risk listSG5 4SY: not on the flood risk listSG5 4SZ: not on the flood risk listSG5 4TD: not on the flood risk listSG5 4TE: not on the flood risk listSG5 4TG: not on the flood risk listSG5 4TH: not on the flood risk listSG5 4TJ: not on the flood risk listSG5 4TL: not on the flood risk listSG5 4TN: not on the flood risk listSG5 4TP: not on the flood risk listSG5 4TQ: not on the flood risk listSG5 4TS: not on the flood risk listSG5 1DN: low flood risk at worstSG5 1AE: low flood risk at worstSG5 1RG: low flood risk at worstSG5 1RT: low flood risk at worstSG5 2AB: low flood risk at worstSG5 2DJ: low flood risk at worstSG5 3NU: low flood risk at worstSG5 3RX: low flood risk at worstSG5 3SE: low flood risk at worstSG5 3TQ: low flood risk at worstSG5 3UD: low flood risk at worstSG5 3TW: low flood risk at worstSG5 3TZ: low flood risk at worstSG5 4BJ: low flood risk at worstSG5 4HD: low flood risk at worstSG5 4HL: low flood risk at worstSG5 4JU: low flood risk at worstSG5 4JZ: low flood risk at worstSG5 4QB: low flood risk at worstSG5 4ST: low flood risk at worstSG5 1SG: medium flood risk at worstSG5 3UP: medium flood risk at worstSG5 3NY: medium flood risk at worstSG5 3PE: medium flood risk at worstSG5 4BL: medium flood risk at worstSG5 4JD: medium flood risk at worstSG5 4JF: medium flood risk at worstSG5 1QU: high flood riskSG5 1EU: high flood riskSG5 1QZ: high flood riskSG5 1PQ: high flood riskSG5 1RB: high flood riskSG5 1SQ: high flood riskSG5 2DE: high flood riskSG5 3HN: high flood riskSG5 3XG: high flood riskSG5 4NU: high flood riskSG5 4AZ: high flood riskSG5 4JP: high flood riskSG5 4JT: high flood riskSG5 4JX: high flood riskSG5 4LA: high flood risk HitchinLetchworthStotfoldLower StondonArleseyHenlow 8 postcodes at high or medium risk, outlined: this goes to SG5 1SE, the one with most homes and businesses at high risk8 postcodes at high or medium risk5 postcodes at high or medium risk, outlined: this goes to SG5 4JP, the one with most homes and businesses at high risk5 postcodes at high or medium risk Map of every postcode in SG5, by flood risk Of the 952 postcodes in SG5 that ONS places, 18 have a home or business at high risk, 10 are at medium risk at worst, 27 are at low risk at worst and 897 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 8 postcodes at high or medium risk; 5 postcodes at high or medium risk. Places named: Hitchin, Letchworth, Stotfold, Lower Stondon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A1(M)A507A602 HitchinLetchworthStotfoldLower Stondon
  • A home or business at high risk: 18
  • At medium risk at worst: 10
  • At low risk at worst: 27
  • At very low risk only: 0
  • Not on the at-risk list: 897
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 952 postcodes in SG5 that ONS places, 18 have a home or business at high risk, 10 are at medium risk at worst, 27 are at low risk at worst and 897 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. A dashed outline shows where 5 or more lie within 150 metres of each other. It is not a boundary, and 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 51.9725, longitude -0.2811. 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

18 postcodes here have a home or business at high risk. These are the 12 with the most homes and businesses at that risk.

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

SG5 1SE8 at high riskSG5 4JP5 at high riskSG5 4JX4 at high riskSG5 1QZ4 at high riskSG5 4NU3 at high riskSG5 1PQ3 at high riskSG5 1QW3 at high riskSG5 2DF2 at high riskSG5 4JT2 at high riskSG5 1RB2 at high riskSG5 4LA1 at high riskSG5 1EU1 at high risk

Where the postcodes at high or medium risk lie together

  • 8 postcodes at high or medium risk, outlined on the map. SG5 1SE, is the one with most homes and businesses at high risk.
  • 5 postcodes at high or medium risk, outlined on the map. SG5 4JP, is the one with most homes and businesses at high risk.

What broadband can you get in SG5?

Ofcom reports on 921 of the 952 postcodes in SG5. At 607 of them every home and business can get gigabit broadband, and at 2 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit607 of 921
Postcodes where every home can get superfast837 of 921
Postcodes where some cannot get decent broadband2 of 921

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 SG5 at risk of flooding?

55 of the 952 postcodes in SG5 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 121 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 55 of 952 postcodes High: 44Medium: 77Low: 275

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 SG5?

Homes in SG5 sold for a typical £440,000 in the 12 months to August 2026, across 413 sales, down 2.2% on the 12 months before, HM Land Registry's figures show.

£440,000 typical price, the 12 months to August 2026
12 months to August 2025
£450,000
12 months to August 2026
£440,000

▼ down 2.2% on the 12 months before

Detached£655,000 101 sales
Semi-detached£485,000 123 sales
Terraced£418,500 94 sales
Flat or maisonette£245,000 95 sales

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 SG5

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

SG5 1202 postcodesSG5 2208 postcodesSG5 3270 postcodesSG5 4254 postcodesSG5 918 postcodes
UK postcode format explained

Places in SG5

Towns and villages with postcodes in SG5, and how many each has here.

Hitchin postcodes,402Stotfold postcodes,244Ickleford postcodes,56Stevenage postcodes,19Lower Stondon postcodes,2

Who covers SG5

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

  • Hitchin870
  • Mid Bedfordshire63
  • Stevenage19

Police force areas

  • Hertfordshire629
  • Bedfordshire323

Next to SG5

SG4 postcode district SG6 postcode district All SG districts Hitchin postcodes

"Next to" is by number: the districts before and after SG5 in the SG area.

Check a postcode

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