SG18 postcode district: Biggleswade and around, Central Bedfordshire

SG18 is a postcode district in England, with 764 postcodes in use in 4 sectors. It has postcodes in Biggleswade and Langford. Its council is Central Bedfordshire.

Postcodes in use
764
Sectors
4
Council
Central Bedfordshire
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 SG18, by flood risk

Map of every postcode in SG18, by flood risk Of the 764 postcodes in SG18 that ONS places, 23 have a home or business at high risk, 14 are at medium risk at worst, 17 are at low risk at worst, 3 are at very low risk only and 707 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 9 postcodes at high or medium risk; 6 postcodes at high or medium risk. Places named: Biggleswade, Langford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A600 SG18 0AA: not on the flood risk listSG18 0AD: not on the flood risk listSG18 0AF: not on the flood risk listSG18 0AH: not on the flood risk listSG18 0AJ: not on the flood risk listSG18 0AL: not on the flood risk listSG18 0AP: not on the flood risk listSG18 0AQ: not on the flood risk listSG18 0AY: not on the flood risk listSG18 0AZ: not on the flood risk listSG18 0BA: not on the flood risk listSG18 0BF: not on the flood risk listSG18 0BG: not on the flood risk listSG18 0BL: not on the flood risk listSG18 0BQ: not on the flood risk listSG18 0BS: not on the flood risk listSG18 0BU: not on the flood risk listSG18 0BW: not on the flood risk listSG18 0BX: not on the flood risk listSG18 0BY: not on the flood risk listSG18 0DA: not on the flood risk listSG18 0DB: not on the flood risk listSG18 0DD: not on the flood risk listSG18 0DE: not on the flood risk listSG18 0DG: not on the flood risk listSG18 0DJ: not on the flood risk listSG18 0DR: not on the flood risk listSG18 0DS: not on the flood risk listSG18 0DT: not on the flood risk listSG18 0DU: not on the flood risk listSG18 0DY: not on the flood risk listSG18 0DZ: not on the flood risk listSG18 0EA: not on the flood risk listSG18 0EB: not on the flood risk listSG18 0ED: not on the flood risk listSG18 0EE: not on the flood risk listSG18 0EG: not on the flood risk listSG18 0EL: not on the flood risk listSG18 0EQ: not on the flood risk listSG18 0ER: not on the flood risk listSG18 0ET: not on the flood risk listSG18 0EZ: not on the flood risk listSG18 0FB: not on the flood risk listSG18 0FD: not on the flood risk listSG18 0FE: not on the flood risk listSG18 0FF: not on the flood risk listSG18 0FG: not on the flood risk listSG18 0FH: not on the flood risk listSG18 0FJ: not on the flood risk listSG18 0FL: not on the flood risk listSG18 0FN: not on the flood risk listSG18 0FQ: not on the flood risk listSG18 0FU: not on the flood risk listSG18 0GY: not on the flood risk listSG18 0GZ: not on the flood risk listSG18 0HA: not on the flood risk listSG18 0HD: not on the flood risk listSG18 0HF: not on the flood risk listSG18 0HG: not on the flood risk listSG18 0HH: not on the flood risk listSG18 0HJ: not on the flood risk listSG18 0HL: not on the flood risk listSG18 0HN: not on the flood risk listSG18 0HP: not on the flood risk listSG18 0HQ: not on the flood risk listSG18 0HT: not on the flood risk listSG18 0HY: not on the flood risk listSG18 0JA: not on the flood risk listSG18 0JD: not on the flood risk listSG18 0JJ: not on the flood risk listSG18 0JN: not on the flood risk listSG18 0JQ: not on the flood risk listSG18 0JT: not on the flood risk listSG18 0JW: not on the flood risk listSG18 0JY: not on the flood risk listSG18 0LA: not on the flood risk listSG18 0LB: not on the flood risk listSG18 0LL: not on the flood risk listSG18 0LN: not on the flood risk listSG18 0LP: not on the flood risk listSG18 0LS: not on the flood risk listSG18 0LT: not on the flood risk listSG18 0LW: not on the flood risk listSG18 0NB: not on the flood risk listSG18 0NE: not on the flood risk listSG18 0NF: not on the flood risk listSG18 0NJ: not on the flood risk listSG18 0NL: not on the flood risk listSG18 0NN: not on the flood risk listSG18 0NR: not on the flood risk listSG18 0NS: not on the flood risk listSG18 0NT: not on the flood risk listSG18 0NU: not on the flood risk listSG18 0NX: not on the flood risk listSG18 0PA: not on the flood risk listSG18 0PB: not on the flood risk listSG18 0PF: not on the flood risk listSG18 0PH: not on the flood risk listSG18 0PP: not on the flood risk listSG18 0PR: not on the flood risk listSG18 0PU: not on the flood risk listSG18 0PY: not on the flood risk listSG18 0PZ: not on the flood risk listSG18 0QA: not on the flood risk listSG18 0QD: not on the flood risk listSG18 0QE: not on the flood risk listSG18 0QF: not on the flood risk listSG18 0QG: not on the flood risk listSG18 0QJ: not on the flood risk listSG18 0RB: not on the flood risk listSG18 0RF: not on the flood risk listSG18 0RQ: not on the flood risk listSG18 0RU: not on the flood risk listSG18 8AE: not on the flood risk listSG18 8AF: not on the flood risk listSG18 8AG: not on the flood risk listSG18 8AJ: not on the flood risk listSG18 8AL: not on the flood risk listSG18 8AN: not on the flood risk listSG18 8AP: not on the flood risk listSG18 8AT: not on the flood risk listSG18 8AY: not on the flood risk listSG18 8BB: not on the flood risk listSG18 8BH: not on the flood risk listSG18 8BJ: not on the flood risk listSG18 8BL: not on the flood risk listSG18 8BP: not on the flood risk listSG18 8BT: not on the flood risk listSG18 8BU: not on the flood risk listSG18 8BW: not on the flood risk listSG18 8BY: not on the flood risk listSG18 8DA: not on the flood risk listSG18 8DD: not on the flood risk listSG18 8DF: not on the flood risk listSG18 8DG: not on the flood risk listSG18 8DJ: not on the flood risk listSG18 8DL: not on the flood risk listSG18 8DN: not on the flood risk listSG18 8DT: not on the flood risk listSG18 8EB: not on the flood risk listSG18 8ED: not on the flood risk listSG18 8EE: not on the flood risk listSG18 8EF: not on the flood risk listSG18 8EH: not on the flood risk listSG18 8EJ: not on the flood risk listSG18 8EN: not on the flood risk listSG18 8ET: not on the flood risk listSG18 8EW: not on the flood risk listSG18 8FD: not on the flood risk listSG18 8FF: not on the flood risk listSG18 8FG: not on the flood risk listSG18 8FJ: not on the flood risk listSG18 8FP: not on the flood risk listSG18 8FT: not on the flood risk listSG18 8FU: not on the flood risk listSG18 8FX: not on the flood risk listSG18 8FY: not on the flood risk listSG18 8FZ: not on the flood risk listSG18 8GA: not on the flood risk listSG18 8GD: not on the flood risk listSG18 8GG: not on the flood risk listSG18 8GL: not on the flood risk listSG18 8GP: not on the flood risk listSG18 8GR: not on the flood risk listSG18 8GU: not on the flood risk listSG18 8GW: not on the flood risk listSG18 8GY: not on the flood risk listSG18 8GZ: not on the flood risk listSG18 8HD: not on the flood risk listSG18 8HJ: not on the flood risk listSG18 8HL: not on the flood risk listSG18 8HN: not on the flood risk listSG18 8HP: not on the flood risk listSG18 8HR: not on the flood risk listSG18 8HS: not on the flood risk listSG18 8HW: not on the flood risk listSG18 8HX: not on the flood risk listSG18 8JA: not on the flood risk listSG18 8JB: not on the flood risk listSG18 8JD: not on the flood risk listSG18 8JE: not on the flood risk listSG18 8JG: not on the flood risk listSG18 8JH: not on the flood risk listSG18 8JJ: not on the flood risk listSG18 8JL: not on the flood risk listSG18 8JN: not on the flood risk listSG18 8JP: not on the flood risk listSG18 8JQ: not on the flood risk listSG18 8JR: not on the flood risk listSG18 8JT: not on the flood risk listSG18 8JU: not on the flood risk listSG18 8JW: not on the flood risk listSG18 8JX: not on the flood risk listSG18 8JY: not on the flood risk listSG18 8JZ: not on the flood risk listSG18 8LD: not on the flood risk listSG18 8LE: not on the flood risk listSG18 8LF: not on the flood risk listSG18 8LJ: not on the flood risk listSG18 8LL: not on the flood risk listSG18 8LP: not on the flood risk listSG18 8LQ: not on the flood risk listSG18 8LS: not on the flood risk listSG18 8LT: not on the flood risk listSG18 8LU: not on the flood risk listSG18 8LX: not on the flood risk listSG18 8NE: not on the flood risk listSG18 8NF: not on the flood risk listSG18 8NG: not on the flood risk listSG18 8NH: not on the flood risk listSG18 8NL: not on the flood risk listSG18 8NN: not on the flood risk listSG18 8NS: not on the flood risk listSG18 8NT: not on the flood risk listSG18 8NU: not on the flood risk listSG18 8NW: not on the flood risk listSG18 8NY: not on the flood risk listSG18 8PA: not on the flood risk listSG18 8PB: not on the flood risk listSG18 8PE: not on the flood risk listSG18 8PF: not on the flood risk listSG18 8PG: not on the flood risk listSG18 8PJ: not on the flood risk listSG18 8PP: not on the flood risk listSG18 8PW: not on the flood risk listSG18 8QA: not on the flood risk listSG18 8QB: not on the flood risk listSG18 8QD: not on the flood risk listSG18 8QE: not on the flood risk listSG18 8QF: not on the flood risk listSG18 8QH: not on the flood risk listSG18 8QJ: not on the flood risk listSG18 8QQ: not on the flood risk listSG18 8QS: not on the flood risk listSG18 8QT: not on the flood risk listSG18 8QU: not on the flood risk listSG18 8QX: not on the flood risk listSG18 8QY: not on the flood risk listSG18 8RA: not on the flood risk listSG18 8RB: not on the flood risk listSG18 8RD: not on the flood risk listSG18 8RF: not on the flood risk listSG18 8RG: not on the flood risk listSG18 8RH: not on the flood risk listSG18 8RJ: not on the flood risk listSG18 8RL: not on the flood risk listSG18 8RN: not on the flood risk listSG18 8RP: not on the flood risk listSG18 8RQ: not on the flood risk listSG18 8RR: not on the flood risk listSG18 8RT: not on the flood risk listSG18 8RU: not on the flood risk listSG18 8RW: not on the flood risk listSG18 8RY: not on the flood risk listSG18 8RZ: not on the flood risk listSG18 8SA: not on the flood risk listSG18 8SB: not on the flood risk listSG18 8SD: not on the flood risk listSG18 8SF: not on the flood risk listSG18 8SH: not on the flood risk listSG18 8SL: not on the flood risk listSG18 8SP: not on the flood risk listSG18 8SS: not on the flood risk listSG18 8ST: not on the flood risk listSG18 8SU: not on the flood risk listSG18 8SW: not on the flood risk listSG18 8SX: not on the flood risk listSG18 8SY: not on the flood risk listSG18 8TP: not on the flood risk listSG18 8TQ: not on the flood risk listSG18 8TT: not on the flood risk listSG18 8TU: not on the flood risk listSG18 8TW: not on the flood risk listSG18 8TX: not on the flood risk listSG18 8TY: not on the flood risk listSG18 8UB: not on the flood risk listSG18 8UD: not on the flood risk listSG18 8UF: not on the flood risk listSG18 8UH: not on the flood risk listSG18 8UN: not on the flood risk listSG18 8UP: not on the flood risk listSG18 8UQ: not on the flood risk listSG18 8US: not on the flood risk listSG18 8UT: not on the flood risk listSG18 8UZ: not on the flood risk listSG18 8WA: not on the flood risk listSG18 8WD: not on the flood risk listSG18 8WH: not on the flood risk listSG18 8WJ: not on the flood risk listSG18 8XD: not on the flood risk listSG18 8XP: not on the flood risk listSG18 8XQ: not on the flood risk listSG18 8XR: not on the flood risk listSG18 8XS: not on the flood risk listSG18 8XY: not on the flood risk listSG18 8YD: not on the flood risk listSG18 8YG: not on the flood risk listSG18 8YH: not on the flood risk listSG18 8YL: not on the flood risk listSG18 8YP: not on the flood risk listSG18 8YT: not on the flood risk listSG18 8YU: not on the flood risk listSG18 8YY: not on the flood risk listSG18 8YZ: not on the flood risk listSG18 9AA: not on the flood risk listSG18 9AD: not on the flood risk listSG18 9AG: not on the flood risk listSG18 9AH: not on the flood risk listSG18 9AJ: not on the flood risk listSG18 9AL: not on the flood risk listSG18 9AN: not on the flood risk listSG18 9AP: not on the flood risk listSG18 9AR: not on the flood risk listSG18 9AT: not on the flood risk listSG18 9AU: not on the flood risk listSG18 9AW: not on the flood risk listSG18 9AX: not on the flood risk listSG18 9BA: not on the flood risk listSG18 9BD: not on the flood risk listSG18 9BG: not on the flood risk listSG18 9BH: not on the flood risk listSG18 9BL: not on the flood risk listSG18 9BN: not on the flood risk listSG18 9BP: not on the flood risk listSG18 9BT: not on the flood risk listSG18 9BU: not on the flood risk listSG18 9BX: not on the flood risk listSG18 9BZ: not on the flood risk listSG18 9DA: not on the flood risk listSG18 9DB: not on the flood risk listSG18 9DD: not on the flood risk listSG18 9DF: not on the flood risk listSG18 9DJ: not on the flood risk listSG18 9DL: not on the flood risk listSG18 9DN: not on the flood risk listSG18 9DP: not on the flood risk listSG18 9DQ: not on the flood risk listSG18 9DR: not on the flood risk listSG18 9DS: not on the flood risk listSG18 9DX: not on the flood risk listSG18 9DZ: not on the flood risk listSG18 9EA: not on the flood risk listSG18 9EB: not on the flood risk listSG18 9EE: not on the flood risk listSG18 9EF: not on the flood risk listSG18 9EG: not on the flood risk listSG18 9EJ: not on the flood risk listSG18 9EL: not on the flood risk listSG18 9EN: not on the flood risk listSG18 9EP: not on the flood risk listSG18 9ER: not on the flood risk listSG18 9ES: not on the flood risk listSG18 9EU: not on the flood risk listSG18 9EW: not on the flood risk listSG18 9EY: not on the flood risk listSG18 9EZ: not on the flood risk listSG18 9FA: not on the flood risk listSG18 9FD: not on the flood risk listSG18 9FE: not on the flood risk listSG18 9FF: not on the flood risk listSG18 9FH: not on the flood risk listSG18 9FJ: not on the flood risk listSG18 9FL: not on the flood risk listSG18 9FN: not on the flood risk listSG18 9FP: not on the flood risk listSG18 9FQ: not on the flood risk listSG18 9FR: not on the flood risk listSG18 9FT: not on the flood risk listSG18 9FU: not on the flood risk listSG18 9FW: not on the flood risk listSG18 9FX: not on the flood risk listSG18 9FZ: not on the flood risk listSG18 9GA: not on the flood risk listSG18 9GB: not on the flood risk listSG18 9GD: not on the flood risk listSG18 9GE: not on the flood risk listSG18 9GF: not on the flood risk listSG18 9GJ: not on the flood risk listSG18 9GN: not on the flood risk listSG18 9GR: not on the flood risk listSG18 9GT: not on the flood risk listSG18 9GU: not on the flood risk listSG18 9GX: not on the flood risk listSG18 9HA: not on the flood risk listSG18 9HB: not on the flood risk listSG18 9HD: not on the flood risk listSG18 9HF: not on the flood risk listSG18 9HG: not on the flood risk listSG18 9HH: not on the flood risk listSG18 9HJ: not on the flood risk listSG18 9HL: not on the flood risk listSG18 9HQ: not on the flood risk listSG18 9HT: not on the flood risk listSG18 9HX: not on the flood risk listSG18 9JA: not on the flood risk listSG18 9JB: not on the flood risk listSG18 9JD: not on the flood risk listSG18 9JE: not on the flood risk listSG18 9JF: not on the flood risk listSG18 9JG: not on the flood risk listSG18 9JJ: not on the flood risk listSG18 9JL: not on the flood risk listSG18 9JN: not on the flood risk listSG18 9JQ: not on the flood risk listSG18 9LA: not on the flood risk listSG18 9LB: not on the flood risk listSG18 9LD: not on the flood risk listSG18 9LH: not on the flood risk listSG18 9LJ: not on the flood risk listSG18 9LL: not on the flood risk listSG18 9LN: not on the flood risk listSG18 9LP: not on the flood risk listSG18 9LR: not on the flood risk listSG18 9LS: not on the flood risk listSG18 9LT: not on the flood risk listSG18 9LU: not on the flood risk listSG18 9LW: not on the flood risk listSG18 9LX: not on the flood risk listSG18 9NA: not on the flood risk listSG18 9NB: not on the flood risk listSG18 9ND: not on the flood risk listSG18 9NE: not on the flood risk listSG18 9NG: not on the flood risk listSG18 9NH: not on the flood risk listSG18 9NJ: not on the flood risk listSG18 9NL: not on the flood risk listSG18 9NN: not on the flood risk listSG18 9NP: not on the flood risk listSG18 9NR: not on the flood risk listSG18 9NS: not on the flood risk listSG18 9NU: not on the flood risk listSG18 9NW: not on the flood risk listSG18 9NY: not on the flood risk listSG18 9NZ: not on the flood risk listSG18 9PA: not on the flood risk listSG18 9PB: not on the flood risk listSG18 9PD: not on the flood risk listSG18 9PE: not on the flood risk listSG18 9PF: not on the flood risk listSG18 9PG: not on the flood risk listSG18 9PH: not on the flood risk listSG18 9PJ: not on the flood risk listSG18 9PL: not on the flood risk listSG18 9PP: not on the flood risk listSG18 9PQ: not on the flood risk listSG18 9PS: not on the flood risk listSG18 9PT: not on the flood risk listSG18 9PU: not on the flood risk listSG18 9PY: not on the flood risk listSG18 9QA: not on the flood risk listSG18 9QD: not on the flood risk listSG18 9QE: not on the flood risk listSG18 9QF: not on the flood risk listSG18 9QG: not on the flood risk listSG18 9QH: not on the flood risk listSG18 9QL: not on the flood risk listSG18 9QN: not on the flood risk listSG18 9QP: not on the flood risk listSG18 9QS: not on the flood risk listSG18 9QU: not on the flood risk listSG18 9QW: not on the flood risk listSG18 9RB: not on the flood risk listSG18 9RF: not on the flood risk listSG18 9RR: not on the flood risk listSG18 9RS: not on the flood risk listSG18 9SF: not on the flood risk listSG18 9SH: not on the flood risk listSG18 9SN: not on the flood risk listSG18 9SR: not on the flood risk listSG18 9SS: not on the flood risk listSG18 9ST: not on the flood risk listSG18 9SX: not on the flood risk listSG18 9SY: not on the flood risk listSG18 9SZ: not on the flood risk listSG18 9TA: not on the flood risk listSG18 9TB: not on the flood risk listSG18 9TD: not on the flood risk listSG18 9TH: not on the flood risk listSG18 9UA: not on the flood risk listSG18 9UD: not on the flood risk listSG18 9UT: not on the flood risk listSG18 9QX: very low flood risk onlySG18 9RA: very low flood risk onlySG18 0AE: low flood risk at worstSG18 0AN: low flood risk at worstSG18 0BB: low flood risk at worstSG18 8YQ: low flood risk at worstSG18 8YR: low flood risk at worstSG18 9AQ: low flood risk at worstSG18 9BJ: low flood risk at worstSG18 9BS: low flood risk at worstSG18 9EH: low flood risk at worstSG18 9FB: low flood risk at worstSG18 9NX: low flood risk at worstSG18 9QB: low flood risk at worstSG18 9QY: low flood risk at worstSG18 9RE: low flood risk at worstSG18 9UR: low flood risk at worstSG18 0AB: medium flood risk at worstSG18 0AW: medium flood risk at worstSG18 0NA: medium flood risk at worstSG18 8BN: medium flood risk at worstSG18 9AY: medium flood risk at worstSG18 9BE: medium flood risk at worstSG18 9GG: medium flood risk at worstSG18 9GH: medium flood risk at worstSG18 9RU: medium flood risk at worstSG18 9JU: medium flood risk at worstSG18 9RL: medium flood risk at worstSG18 9RW: medium flood risk at worstSG18 9SE: medium flood risk at worstSG18 0AG: high flood riskSG18 0EP: high flood riskSG18 8AZ: high flood riskSG18 8HF: high flood riskSG18 8DU: high flood riskSG18 8DX: high flood riskSG18 8HE: high flood riskSG18 8HG: high flood riskSG18 9AB: high flood riskSG18 9BB: high flood riskSG18 9DU: high flood riskSG18 9ED: high flood riskSG18 9JH: high flood riskSG18 9JT: high flood riskSG18 9JX: high flood riskSG18 9JZ: high flood riskSG18 9LZ: high flood riskSG18 9RZ: high flood riskSG18 9SA: high flood riskSG18 9SD: high flood risk BiggleswadeLangford 9 postcodes at high or medium risk, outlined: this goes to SG18 8HQ, the one with most homes and businesses at high risk9 postcodes at high or medium risk6 postcodes at high or medium risk, outlined: this goes to SG18 9RZ, the one with most homes and businesses at high risk6 postcodes at high or medium risk Map of every postcode in SG18, by flood risk Of the 764 postcodes in SG18 that ONS places, 23 have a home or business at high risk, 14 are at medium risk at worst, 17 are at low risk at worst, 3 are at very low risk only and 707 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 9 postcodes at high or medium risk; 6 postcodes at high or medium risk. Places named: Biggleswade, Langford. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A600 BiggleswadeLangford
  • A home or business at high risk: 23
  • At medium risk at worst: 14
  • At low risk at worst: 17
  • At very low risk only: 3
  • Not on the at-risk list: 707
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 764 postcodes in SG18 that ONS places, 23 have a home or business at high risk, 14 are at medium risk at worst, 17 are at low risk at worst, 3 are at very low risk only and 707 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 170 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 52.0828, longitude -0.2645. 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

23 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.

SG18 8HQ17 at high riskSG18 8HG16 at high riskSG18 8EA13 at high riskSG18 9SD10 at high riskSG18 8DZ8 at high riskSG18 9JT7 at high riskSG18 8HE7 at high riskSG18 9LZ6 at high riskSG18 9RZ5 at high riskSG18 8DX5 at high riskSG18 9SA5 at high riskSG18 9AB3 at high risk

Where the postcodes at high or medium risk lie together

  • 9 postcodes at high or medium risk, outlined on the map. SG18 8HQ, is the one with most homes and businesses at high risk.
  • 6 postcodes at high or medium risk, outlined on the map. SG18 9RZ, is the one with most homes and businesses at high risk.

What broadband can you get in SG18?

Ofcom reports on 749 of the 764 postcodes in SG18. At 551 of them every home and business can get gigabit broadband, and at 4 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit551 of 749
Postcodes where every home can get superfast669 of 749
Postcodes where some cannot get decent broadband4 of 749

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 SG18 at risk of flooding?

57 of the 764 postcodes in SG18 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 254 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 57 of 764 postcodes High: 120Medium: 134Low: 138Very low: 61

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 SG18?

Homes in SG18 sold for a typical £355,000 in the 12 months to August 2026, across 381 sales, down 1.4% on the 12 months before, HM Land Registry's figures show.

£355,000 typical price, the 12 months to August 2026
£360,000 12 months to August 2025
▼ down 1.4% on the 12 months before
  • Detached £480,250 88 sales
  • Semi-detached £379,950 131 sales
  • Terraced £298,500 104 sales
  • Flat or maisonette £200,000 58 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 SG18

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

SG18 0194 postcodesSG18 17 postcodesSG18 8312 postcodesSG18 9251 postcodes
UK postcode format explained

Places in SG18

Towns and villages with postcodes in SG18, and how many each has here.

Biggleswade postcodes,478Langford postcodes,87

Who covers SG18

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 Bedfordshire672
  • Hitchin92

Police force areas

  • Bedfordshire764

Next to SG18

SG17 postcode district SG19 postcode district All SG districts Biggleswade postcodes

"Next to" is by number: the districts before and after SG18 in the SG area.

Check a postcode

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