SW20 postcode district: Merton and around

SW20 is a postcode district in England, with 570 postcodes in use in 4 sectors. It has postcodes in Merton and Kingston upon Thames. It is split between 2 councils: Merton (561 postcodes) and Kingston upon Thames (9).

Postcodes in use
570
Sectors
4
Councils
2 councils
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 SW20, by flood risk

Map of every postcode in SW20, by flood risk Of the 570 postcodes in SW20 that ONS places, 23 have a home or business at high risk, 4 are at medium risk at worst, 14 are at low risk at worst and 529 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; 8 postcodes at high or medium risk. Places named: Raynes Park, Village. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. SW20 0AB: not on the flood risk listSW20 0AD: not on the flood risk listSW20 0AE: not on the flood risk listSW20 0AF: not on the flood risk listSW20 0AP: not on the flood risk listSW20 0AR: not on the flood risk listSW20 0AT: not on the flood risk listSW20 0AX: not on the flood risk listSW20 0AY: not on the flood risk listSW20 0AZ: not on the flood risk listSW20 0BA: not on the flood risk listSW20 0BB: not on the flood risk listSW20 0BD: not on the flood risk listSW20 0BE: not on the flood risk listSW20 0BF: not on the flood risk listSW20 0BG: not on the flood risk listSW20 0BH: not on the flood risk listSW20 0BJ: not on the flood risk listSW20 0BL: not on the flood risk listSW20 0BN: not on the flood risk listSW20 0BP: not on the flood risk listSW20 0BQ: not on the flood risk listSW20 0BT: not on the flood risk listSW20 0BX: not on the flood risk listSW20 0BY: not on the flood risk listSW20 0BZ: not on the flood risk listSW20 0DB: not on the flood risk listSW20 0DD: not on the flood risk listSW20 0DE: not on the flood risk listSW20 0DF: not on the flood risk listSW20 0DG: not on the flood risk listSW20 0DH: not on the flood risk listSW20 0DJ: not on the flood risk listSW20 0DL: not on the flood risk listSW20 0DN: not on the flood risk listSW20 0DP: not on the flood risk listSW20 0DQ: not on the flood risk listSW20 0DR: not on the flood risk listSW20 0DS: not on the flood risk listSW20 0DW: not on the flood risk listSW20 0DY: not on the flood risk listSW20 0EA: not on the flood risk listSW20 0EB: not on the flood risk listSW20 0ED: not on the flood risk listSW20 0EE: not on the flood risk listSW20 0EF: not on the flood risk listSW20 0EG: not on the flood risk listSW20 0EH: not on the flood risk listSW20 0EJ: not on the flood risk listSW20 0EL: not on the flood risk listSW20 0EN: not on the flood risk listSW20 0EP: not on the flood risk listSW20 0EQ: not on the flood risk listSW20 0ER: not on the flood risk listSW20 0ES: not on the flood risk listSW20 0ET: not on the flood risk listSW20 0EU: not on the flood risk listSW20 0EW: not on the flood risk listSW20 0EX: not on the flood risk listSW20 0EY: not on the flood risk listSW20 0EZ: not on the flood risk listSW20 0FA: not on the flood risk listSW20 0FQ: not on the flood risk listSW20 0FR: not on the flood risk listSW20 0FS: not on the flood risk listSW20 0FT: not on the flood risk listSW20 0FU: not on the flood risk listSW20 0FW: not on the flood risk listSW20 0FY: not on the flood risk listSW20 0HG: not on the flood risk listSW20 0HH: not on the flood risk listSW20 0HJ: not on the flood risk listSW20 0HL: not on the flood risk listSW20 0HN: not on the flood risk listSW20 0HP: not on the flood risk listSW20 0HQ: not on the flood risk listSW20 0HR: not on the flood risk listSW20 0HS: not on the flood risk listSW20 0HT: not on the flood risk listSW20 0HU: not on the flood risk listSW20 0HW: not on the flood risk listSW20 0JB: not on the flood risk listSW20 0JD: not on the flood risk listSW20 0JE: not on the flood risk listSW20 0JF: not on the flood risk listSW20 0JG: not on the flood risk listSW20 0JN: not on the flood risk listSW20 0JP: not on the flood risk listSW20 0JQ: not on the flood risk listSW20 0JT: not on the flood risk listSW20 0JY: not on the flood risk listSW20 0LA: not on the flood risk listSW20 0LJ: not on the flood risk listSW20 0LP: not on the flood risk listSW20 0LQ: not on the flood risk listSW20 0LR: not on the flood risk listSW20 0LT: not on the flood risk listSW20 0LW: not on the flood risk listSW20 0NA: not on the flood risk listSW20 0NB: not on the flood risk listSW20 0ND: not on the flood risk listSW20 0NF: not on the flood risk listSW20 0NJ: not on the flood risk listSW20 0NL: not on the flood risk listSW20 0NN: not on the flood risk listSW20 0NP: not on the flood risk listSW20 0NR: not on the flood risk listSW20 0NS: not on the flood risk listSW20 0NT: not on the flood risk listSW20 0NU: not on the flood risk listSW20 0NW: not on the flood risk listSW20 0NX: not on the flood risk listSW20 0NY: not on the flood risk listSW20 0PA: not on the flood risk listSW20 0PB: not on the flood risk listSW20 0PD: not on the flood risk listSW20 0PE: not on the flood risk listSW20 0PF: not on the flood risk listSW20 0PG: not on the flood risk listSW20 0PH: not on the flood risk listSW20 0PJ: not on the flood risk listSW20 0PL: not on the flood risk listSW20 0PN: not on the flood risk listSW20 0PP: not on the flood risk listSW20 0PQ: not on the flood risk listSW20 0PR: not on the flood risk listSW20 0PS: not on the flood risk listSW20 0PT: not on the flood risk listSW20 0PU: not on the flood risk listSW20 0PW: not on the flood risk listSW20 0PX: not on the flood risk listSW20 0PY: not on the flood risk listSW20 0PZ: not on the flood risk listSW20 0QA: not on the flood risk listSW20 0QB: not on the flood risk listSW20 0QD: not on the flood risk listSW20 0QE: not on the flood risk listSW20 0QF: not on the flood risk listSW20 0QH: not on the flood risk listSW20 0QJ: not on the flood risk listSW20 0QL: not on the flood risk listSW20 0QN: not on the flood risk listSW20 0QP: not on the flood risk listSW20 0QQ: not on the flood risk listSW20 0QR: not on the flood risk listSW20 0QS: not on the flood risk listSW20 0QT: not on the flood risk listSW20 0QU: not on the flood risk listSW20 0QW: not on the flood risk listSW20 0QX: not on the flood risk listSW20 0QY: not on the flood risk listSW20 0RG: not on the flood risk listSW20 0RH: not on the flood risk listSW20 0RJ: not on the flood risk listSW20 0RN: not on the flood risk listSW20 0RW: not on the flood risk listSW20 0RX: not on the flood risk listSW20 0RY: not on the flood risk listSW20 0RZ: not on the flood risk listSW20 0SA: not on the flood risk listSW20 0SB: not on the flood risk listSW20 0SE: not on the flood risk listSW20 0SF: not on the flood risk listSW20 0SG: not on the flood risk listSW20 0SH: not on the flood risk listSW20 0SN: not on the flood risk listSW20 0SP: not on the flood risk listSW20 0SQ: not on the flood risk listSW20 0ST: not on the flood risk listSW20 0SU: not on the flood risk listSW20 0SX: not on the flood risk listSW20 0SY: not on the flood risk listSW20 0SZ: not on the flood risk listSW20 0TA: not on the flood risk listSW20 0TB: not on the flood risk listSW20 0TD: not on the flood risk listSW20 0TH: not on the flood risk listSW20 0TJ: not on the flood risk listSW20 0TL: not on the flood risk listSW20 0TN: not on the flood risk listSW20 0TW: not on the flood risk listSW20 0UB: not on the flood risk listSW20 0UD: not on the flood risk listSW20 0UE: not on the flood risk listSW20 0UF: not on the flood risk listSW20 0UG: not on the flood risk listSW20 0UH: not on the flood risk listSW20 0UJ: not on the flood risk listSW20 0UL: not on the flood risk listSW20 0UN: not on the flood risk listSW20 0UQ: not on the flood risk listSW20 0UW: not on the flood risk listSW20 0WJ: not on the flood risk listSW20 8AA: not on the flood risk listSW20 8AD: not on the flood risk listSW20 8AE: not on the flood risk listSW20 8AF: not on the flood risk listSW20 8AG: not on the flood risk listSW20 8AH: not on the flood risk listSW20 8AJ: not on the flood risk listSW20 8AL: not on the flood risk listSW20 8AN: not on the flood risk listSW20 8AP: not on the flood risk listSW20 8AQ: not on the flood risk listSW20 8AR: not on the flood risk listSW20 8AS: not on the flood risk listSW20 8AT: not on the flood risk listSW20 8AU: not on the flood risk listSW20 8AW: not on the flood risk listSW20 8AX: not on the flood risk listSW20 8AY: not on the flood risk listSW20 8BA: not on the flood risk listSW20 8BB: not on the flood risk listSW20 8BD: not on the flood risk listSW20 8BE: not on the flood risk listSW20 8BF: not on the flood risk listSW20 8BG: not on the flood risk listSW20 8BH: not on the flood risk listSW20 8BJ: not on the flood risk listSW20 8BL: not on the flood risk listSW20 8BN: not on the flood risk listSW20 8BP: not on the flood risk listSW20 8BQ: not on the flood risk listSW20 8BS: not on the flood risk listSW20 8BT: not on the flood risk listSW20 8BU: not on the flood risk listSW20 8BW: not on the flood risk listSW20 8BZ: not on the flood risk listSW20 8DA: not on the flood risk listSW20 8DE: not on the flood risk listSW20 8DG: not on the flood risk listSW20 8DH: not on the flood risk listSW20 8DJ: not on the flood risk listSW20 8DL: not on the flood risk listSW20 8DN: not on the flood risk listSW20 8DP: not on the flood risk listSW20 8DQ: not on the flood risk listSW20 8DR: not on the flood risk listSW20 8DS: not on the flood risk listSW20 8DT: not on the flood risk listSW20 8DX: not on the flood risk listSW20 8DY: not on the flood risk listSW20 8DZ: not on the flood risk listSW20 8EA: not on the flood risk listSW20 8EB: not on the flood risk listSW20 8ED: not on the flood risk listSW20 8EE: not on the flood risk listSW20 8EF: not on the flood risk listSW20 8EG: not on the flood risk listSW20 8EH: not on the flood risk listSW20 8EJ: not on the flood risk listSW20 8EL: not on the flood risk listSW20 8EQ: not on the flood risk listSW20 8ET: not on the flood risk listSW20 8EU: not on the flood risk listSW20 8EX: not on the flood risk listSW20 8EY: not on the flood risk listSW20 8EZ: not on the flood risk listSW20 8HA: not on the flood risk listSW20 8HB: not on the flood risk listSW20 8HF: not on the flood risk listSW20 8HG: not on the flood risk listSW20 8HH: not on the flood risk listSW20 8HJ: not on the flood risk listSW20 8HL: not on the flood risk listSW20 8HN: not on the flood risk listSW20 8HP: not on the flood risk listSW20 8HQ: not on the flood risk listSW20 8HR: not on the flood risk listSW20 8HT: not on the flood risk listSW20 8HW: not on the flood risk listSW20 8HX: not on the flood risk listSW20 8HY: not on the flood risk listSW20 8HZ: not on the flood risk listSW20 8JA: not on the flood risk listSW20 8JB: not on the flood risk listSW20 8JD: not on the flood risk listSW20 8JE: not on the flood risk listSW20 8JF: not on the flood risk listSW20 8JL: not on the flood risk listSW20 8JN: not on the flood risk listSW20 8JP: not on the flood risk listSW20 8JQ: not on the flood risk listSW20 8JR: not on the flood risk listSW20 8JS: not on the flood risk listSW20 8JT: not on the flood risk listSW20 8JU: not on the flood risk listSW20 8JX: not on the flood risk listSW20 8JY: not on the flood risk listSW20 8JZ: not on the flood risk listSW20 8LA: not on the flood risk listSW20 8LB: not on the flood risk listSW20 8LD: not on the flood risk listSW20 8LL: not on the flood risk listSW20 8LN: not on the flood risk listSW20 8LR: not on the flood risk listSW20 8LS: not on the flood risk listSW20 8LT: not on the flood risk listSW20 8LU: not on the flood risk listSW20 8LX: not on the flood risk listSW20 8ND: not on the flood risk listSW20 8NE: not on the flood risk listSW20 8NG: not on the flood risk listSW20 8NJ: not on the flood risk listSW20 8NL: not on the flood risk listSW20 8NP: not on the flood risk listSW20 8NR: not on the flood risk listSW20 8NS: not on the flood risk listSW20 8NT: not on the flood risk listSW20 8NU: not on the flood risk listSW20 8NW: not on the flood risk listSW20 8NX: not on the flood risk listSW20 8NY: not on the flood risk listSW20 8NZ: not on the flood risk listSW20 8PA: not on the flood risk listSW20 8PB: not on the flood risk listSW20 8PD: not on the flood risk listSW20 8PE: not on the flood risk listSW20 8PF: not on the flood risk listSW20 8PN: not on the flood risk listSW20 8PP: not on the flood risk listSW20 8PR: not on the flood risk listSW20 8PS: not on the flood risk listSW20 8PT: not on the flood risk listSW20 8PX: not on the flood risk listSW20 8PY: not on the flood risk listSW20 8PZ: not on the flood risk listSW20 8QA: not on the flood risk listSW20 8QB: not on the flood risk listSW20 8QD: not on the flood risk listSW20 8QE: not on the flood risk listSW20 8QF: not on the flood risk listSW20 8QG: not on the flood risk listSW20 8QH: not on the flood risk listSW20 8QL: not on the flood risk listSW20 8QQ: not on the flood risk listSW20 8QS: not on the flood risk listSW20 8QT: not on the flood risk listSW20 8QU: not on the flood risk listSW20 8QY: not on the flood risk listSW20 8RA: not on the flood risk listSW20 8RB: not on the flood risk listSW20 8RD: not on the flood risk listSW20 8RE: not on the flood risk listSW20 8RF: not on the flood risk listSW20 8RG: not on the flood risk listSW20 8RH: not on the flood risk listSW20 8RJ: not on the flood risk listSW20 8RL: not on the flood risk listSW20 8RN: not on the flood risk listSW20 8RP: not on the flood risk listSW20 8RQ: not on the flood risk listSW20 8RT: not on the flood risk listSW20 8RW: not on the flood risk listSW20 8RX: not on the flood risk listSW20 8SA: not on the flood risk listSW20 8SB: not on the flood risk listSW20 8SE: not on the flood risk listSW20 8SF: not on the flood risk listSW20 8SG: not on the flood risk listSW20 8SH: not on the flood risk listSW20 8SJ: not on the flood risk listSW20 8SL: not on the flood risk listSW20 8SN: not on the flood risk listSW20 8SP: not on the flood risk listSW20 8SQ: not on the flood risk listSW20 8SR: not on the flood risk listSW20 8SS: not on the flood risk listSW20 8ST: not on the flood risk listSW20 8SU: not on the flood risk listSW20 8SW: not on the flood risk listSW20 8SX: not on the flood risk listSW20 8TE: not on the flood risk listSW20 8TF: not on the flood risk listSW20 8TG: not on the flood risk listSW20 8TN: not on the flood risk listSW20 8TP: not on the flood risk listSW20 8TR: not on the flood risk listSW20 8TS: not on the flood risk listSW20 8TW: not on the flood risk listSW20 8UA: not on the flood risk listSW20 8ZU: not on the flood risk listSW20 9AA: not on the flood risk listSW20 9AB: not on the flood risk listSW20 9AD: not on the flood risk listSW20 9AE: not on the flood risk listSW20 9AF: not on the flood risk listSW20 9AG: not on the flood risk listSW20 9AH: not on the flood risk listSW20 9AJ: not on the flood risk listSW20 9AN: not on the flood risk listSW20 9AP: not on the flood risk listSW20 9AQ: not on the flood risk listSW20 9AR: not on the flood risk listSW20 9AS: not on the flood risk listSW20 9AU: not on the flood risk listSW20 9AW: not on the flood risk listSW20 9AY: not on the flood risk listSW20 9BA: not on the flood risk listSW20 9BB: not on the flood risk listSW20 9BD: not on the flood risk listSW20 9BE: not on the flood risk listSW20 9BF: not on the flood risk listSW20 9BG: not on the flood risk listSW20 9BJ: not on the flood risk listSW20 9BN: not on the flood risk listSW20 9BP: not on the flood risk listSW20 9BS: not on the flood risk listSW20 9BT: not on the flood risk listSW20 9BU: not on the flood risk listSW20 9BW: not on the flood risk listSW20 9BX: not on the flood risk listSW20 9BY: not on the flood risk listSW20 9BZ: not on the flood risk listSW20 9DB: not on the flood risk listSW20 9DD: not on the flood risk listSW20 9DF: not on the flood risk listSW20 9DG: not on the flood risk listSW20 9DH: not on the flood risk listSW20 9DJ: not on the flood risk listSW20 9DL: not on the flood risk listSW20 9DN: not on the flood risk listSW20 9DP: not on the flood risk listSW20 9DQ: not on the flood risk listSW20 9DR: not on the flood risk listSW20 9DT: not on the flood risk listSW20 9DW: not on the flood risk listSW20 9DX: not on the flood risk listSW20 9DY: not on the flood risk listSW20 9DZ: not on the flood risk listSW20 9EA: not on the flood risk listSW20 9EB: not on the flood risk listSW20 9ED: not on the flood risk listSW20 9EE: not on the flood risk listSW20 9EF: not on the flood risk listSW20 9EG: not on the flood risk listSW20 9EN: not on the flood risk listSW20 9EP: not on the flood risk listSW20 9ER: not on the flood risk listSW20 9ES: not on the flood risk listSW20 9ET: not on the flood risk listSW20 9EU: not on the flood risk listSW20 9EW: not on the flood risk listSW20 9HA: not on the flood risk listSW20 9HB: not on the flood risk listSW20 9HD: not on the flood risk listSW20 9HE: not on the flood risk listSW20 9HF: not on the flood risk listSW20 9HG: not on the flood risk listSW20 9HL: not on the flood risk listSW20 9HN: not on the flood risk listSW20 9HQ: not on the flood risk listSW20 9HU: not on the flood risk listSW20 9HX: not on the flood risk listSW20 9HY: not on the flood risk listSW20 9JB: not on the flood risk listSW20 9JD: not on the flood risk listSW20 9JE: not on the flood risk listSW20 9JF: not on the flood risk listSW20 9JG: not on the flood risk listSW20 9JH: not on the flood risk listSW20 9JP: not on the flood risk listSW20 9JQ: not on the flood risk listSW20 9JR: not on the flood risk listSW20 9JS: not on the flood risk listSW20 9JT: not on the flood risk listSW20 9JU: not on the flood risk listSW20 9JX: not on the flood risk listSW20 9JY: not on the flood risk listSW20 9JZ: not on the flood risk listSW20 9LA: not on the flood risk listSW20 9LB: not on the flood risk listSW20 9LD: not on the flood risk listSW20 9LE: not on the flood risk listSW20 9LY: not on the flood risk listSW20 9LZ: not on the flood risk listSW20 9NF: not on the flood risk listSW20 9NN: not on the flood risk listSW20 9NP: not on the flood risk listSW20 9NR: not on the flood risk listSW20 9NS: not on the flood risk listSW20 9NT: not on the flood risk listSW20 9NU: not on the flood risk listSW20 9NX: not on the flood risk listSW20 9NY: not on the flood risk listSW20 9NZ: not on the flood risk listSW20 9PA: not on the flood risk listSW20 0AA: low flood risk at worstSW20 0AH: low flood risk at worstSW20 0AN: low flood risk at worstSW20 0RL: low flood risk at worstSW20 0SR: low flood risk at worstSW20 0SS: low flood risk at worstSW20 9HH: low flood risk at worstSW20 9HJ: low flood risk at worstSW20 9LW: low flood risk at worstSW20 9NB: low flood risk at worstSW20 9NE: low flood risk at worstSW20 9NH: low flood risk at worstSW20 9NJ: low flood risk at worstSW20 9NQ: low flood risk at worstSW20 0AG: medium flood risk at worstSW20 0AQ: medium flood risk at worstSW20 0RQ: medium flood risk at worstSW20 9AT: medium flood risk at worstSW20 0AJ: high flood riskSW20 0AL: high flood riskSW20 0AW: high flood riskSW20 0JH: high flood riskSW20 0JL: high flood riskSW20 9AX: high flood riskSW20 9AZ: high flood riskSW20 9BH: high flood riskSW20 9BQ: high flood riskSW20 9DS: high flood riskSW20 9HZ: high flood riskSW20 9JA: high flood riskSW20 9LL: high flood riskSW20 9LN: high flood riskSW20 9LP: high flood riskSW20 9LR: high flood riskSW20 9LS: high flood riskSW20 9LT: high flood riskSW20 9LU: high flood riskSW20 9LX: high flood riskSW20 9NA: high flood riskSW20 9NL: high flood riskSW20 9PB: high flood risk Raynes ParkVillage 8 postcodes at high or medium risk, outlined: this goes to SW20 9AZ, the one with most homes and businesses at high risk8 postcodes at high or medium risk8 postcodes at high or medium risk, outlined: this goes to SW20 9LT, the one with most homes and businesses at high risk8 postcodes at high or medium risk Map of every postcode in SW20, by flood risk Of the 570 postcodes in SW20 that ONS places, 23 have a home or business at high risk, 4 are at medium risk at worst, 14 are at low risk at worst and 529 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; 8 postcodes at high or medium risk. Places named: Raynes Park, Village. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Raynes ParkVillage 8 postcodes at high or medium risk, outlined: this goes to SW20 9LT, the one with most homes and businesses at high risk8 postcodes at high or medium risk
  • A home or business at high risk: 23
  • At medium risk at worst: 4
  • At low risk at worst: 14
  • At very low risk only: 0
  • Not on the at-risk list: 529
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 570 postcodes in SW20 that ONS places, 23 have a home or business at high risk, 4 are at medium risk at worst, 14 are at low risk at worst and 529 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.4108, longitude -0.2279. 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.

SW20 9LT43 at high riskSW20 9AZ26 at high riskSW20 9NL24 at high riskSW20 9LN21 at high riskSW20 9AX17 at high riskSW20 9LS17 at high riskSW20 9DS16 at high riskSW20 9LR15 at high riskSW20 9BQ14 at high riskSW20 9PB12 at high riskSW20 9BH9 at high riskSW20 9LL8 at high risk

Where the postcodes at high or medium risk lie together

  • 8 postcodes at high or medium risk, outlined on the map. SW20 9AZ, is the one with most homes and businesses at high risk.
  • 8 postcodes at high or medium risk, outlined on the map. SW20 9LT, is the one with most homes and businesses at high risk.

What broadband can you get in SW20?

Ofcom reports on 531 of the 570 postcodes in SW20. At 452 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit452 of 531
Postcodes where every home can get superfast524 of 531

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 SW20 at risk of flooding?

41 of the 570 postcodes in SW20 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 412 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 41 of 570 postcodes High: 271Medium: 141Low: 349

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 SW20?

Homes in SW20 sold for a typical £690,000 in the 12 months to August 2026, across 287 sales, down 5.5% on the 12 months before, HM Land Registry's figures show.

£690,000 typical price, the 12 months to August 2026
£730,000 12 months to August 2025
▼ down 5.5% on the 12 months before
  • Detached £1,605,000 13 sales
  • Semi-detached £920,000 55 sales
  • Terraced £858,000 113 sales
  • Flat or maisonette £430,000 106 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 SW20

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

SW20 0217 postcodesSW20 215 postcodesSW20 8201 postcodesSW20 9137 postcodes
UK postcode format explained

Places in SW20

Towns and villages with postcodes in SW20, and how many each has here.

Merton postcodes,561Kingston upon Thames postcodes,9

Who covers SW20

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

  • Wimbledon509
  • Mitcham and Morden52
  • Richmond Park9

Police force areas

  • Metropolitan Police570

Next to SW20

SW19 postcode district SW95 postcode district All SW districts Merton postcodes

"Next to" is by number: the districts before and after SW20 in the SW area.

Check a postcode

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