SW1W postcode district: City of Westminster and around

SW1W is a postcode district in England, with 343 postcodes in use in 3 sectors. It has postcodes in City of Westminster, Kensington and Chelsea and Wandsworth. It is split between 3 councils: Westminster (289 postcodes), Kensington and Chelsea (52) and Wandsworth (2).

Postcodes in use
343
Sectors
3
Councils
3 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 SW1W, by flood risk

Map of every postcode in SW1W, by flood risk Of the 343 postcodes in SW1W that ONS places, 42 are at very low risk only and 301 are not on the Environment Agency's at-risk list. Places named: Knightsbridge & Belgravia, Royal Hospital. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 250 m. A3212A3216A302A3217 SW1W 0AE: not on the flood risk listSW1W 0AH: not on the flood risk listSW1W 0AJ: not on the flood risk listSW1W 0AP: not on the flood risk listSW1W 0BD: not on the flood risk listSW1W 0BP: not on the flood risk listSW1W 0BS: not on the flood risk listSW1W 0DH: not on the flood risk listSW1W 0DT: not on the flood risk listSW1W 0EB: not on the flood risk listSW1W 0EJ: not on the flood risk listSW1W 0EN: not on the flood risk listSW1W 0EU: not on the flood risk listSW1W 0EX: not on the flood risk listSW1W 0HH: not on the flood risk listSW1W 0HU: not on the flood risk listSW1W 0JA: not on the flood risk listSW1W 0JJ: not on the flood risk listSW1W 0JN: not on the flood risk listSW1W 0JP: not on the flood risk listSW1W 0JR: not on the flood risk listSW1W 0JW: not on the flood risk listSW1W 0LB: not on the flood risk listSW1W 0LD: not on the flood risk listSW1W 0LH: not on the flood risk listSW1W 0LJ: not on the flood risk listSW1W 0LN: not on the flood risk listSW1W 0LP: not on the flood risk listSW1W 0LS: not on the flood risk listSW1W 0LU: not on the flood risk listSW1W 0LZ: not on the flood risk listSW1W 0NL: not on the flood risk listSW1W 0NR: not on the flood risk listSW1W 0NT: not on the flood risk listSW1W 0NY: not on the flood risk listSW1W 0NZ: not on the flood risk listSW1W 0PP: not on the flood risk listSW1W 0PR: not on the flood risk listSW1W 0PS: not on the flood risk listSW1W 0PT: not on the flood risk listSW1W 0QH: not on the flood risk listSW1W 0QP: not on the flood risk listSW1W 0QU: not on the flood risk listSW1W 0QY: not on the flood risk listSW1W 0RA: not on the flood risk listSW1W 0RB: not on the flood risk listSW1W 0RE: not on the flood risk listSW1W 0RN: not on the flood risk listSW1W 0RP: not on the flood risk listSW1W 0SJ: not on the flood risk listSW1W 0SR: not on the flood risk listSW1W 0SS: not on the flood risk listSW1W 0XX: not on the flood risk listSW1W 8AB: not on the flood risk listSW1W 8AE: not on the flood risk listSW1W 8AF: not on the flood risk listSW1W 8AH: not on the flood risk listSW1W 8AL: not on the flood risk listSW1W 8AQ: not on the flood risk listSW1W 8AR: not on the flood risk listSW1W 8AS: not on the flood risk listSW1W 8AX: not on the flood risk listSW1W 8BA: not on the flood risk listSW1W 8BB: not on the flood risk listSW1W 8BD: not on the flood risk listSW1W 8BF: not on the flood risk listSW1W 8BJ: not on the flood risk listSW1W 8BL: not on the flood risk listSW1W 8BN: not on the flood risk listSW1W 8BP: not on the flood risk listSW1W 8BU: not on the flood risk listSW1W 8BW: not on the flood risk listSW1W 8BX: not on the flood risk listSW1W 8BY: not on the flood risk listSW1W 8BZ: not on the flood risk listSW1W 8DA: not on the flood risk listSW1W 8DB: not on the flood risk listSW1W 8DD: not on the flood risk listSW1W 8DH: not on the flood risk listSW1W 8DJ: not on the flood risk listSW1W 8DL: not on the flood risk listSW1W 8DX: not on the flood risk listSW1W 8DY: not on the flood risk listSW1W 8EA: not on the flood risk listSW1W 8EB: not on the flood risk listSW1W 8ED: not on the flood risk listSW1W 8EE: not on the flood risk listSW1W 8EG: not on the flood risk listSW1W 8EL: not on the flood risk listSW1W 8ER: not on the flood risk listSW1W 8EU: not on the flood risk listSW1W 8EX: not on the flood risk listSW1W 8EZ: not on the flood risk listSW1W 8FA: not on the flood risk listSW1W 8HA: not on the flood risk listSW1W 8HB: not on the flood risk listSW1W 8HD: not on the flood risk listSW1W 8HE: not on the flood risk listSW1W 8HF: not on the flood risk listSW1W 8HG: not on the flood risk listSW1W 8HH: not on the flood risk listSW1W 8HJ: not on the flood risk listSW1W 8HN: not on the flood risk listSW1W 8HP: not on the flood risk listSW1W 8HQ: not on the flood risk listSW1W 8HR: not on the flood risk listSW1W 8HS: not on the flood risk listSW1W 8HU: not on the flood risk listSW1W 8HW: not on the flood risk listSW1W 8HX: not on the flood risk listSW1W 8JA: not on the flood risk listSW1W 8JD: not on the flood risk listSW1W 8JE: not on the flood risk listSW1W 8JF: not on the flood risk listSW1W 8JH: not on the flood risk listSW1W 8JJ: not on the flood risk listSW1W 8JL: not on the flood risk listSW1W 8JP: not on the flood risk listSW1W 8JQ: not on the flood risk listSW1W 8JR: not on the flood risk listSW1W 8JS: not on the flood risk listSW1W 8JT: not on the flood risk listSW1W 8JU: not on the flood risk listSW1W 8JW: not on the flood risk listSW1W 8JX: not on the flood risk listSW1W 8JY: not on the flood risk listSW1W 8JZ: not on the flood risk listSW1W 8LA: not on the flood risk listSW1W 8LH: not on the flood risk listSW1W 8LJ: not on the flood risk listSW1W 8LL: not on the flood risk listSW1W 8LP: not on the flood risk listSW1W 8LS: not on the flood risk listSW1W 8LT: not on the flood risk listSW1W 8LU: not on the flood risk listSW1W 8LW: not on the flood risk listSW1W 8NA: not on the flood risk listSW1W 8NB: not on the flood risk listSW1W 8NE: not on the flood risk listSW1W 8NG: not on the flood risk listSW1W 8NH: not on the flood risk listSW1W 8NL: not on the flood risk listSW1W 8NN: not on the flood risk listSW1W 8NP: not on the flood risk listSW1W 8NQ: not on the flood risk listSW1W 8NW: not on the flood risk listSW1W 8NY: not on the flood risk listSW1W 8PA: not on the flood risk listSW1W 8PB: not on the flood risk listSW1W 8PD: not on the flood risk listSW1W 8PE: not on the flood risk listSW1W 8PF: not on the flood risk listSW1W 8PG: not on the flood risk listSW1W 8PH: not on the flood risk listSW1W 8PL: not on the flood risk listSW1W 8PX: not on the flood risk listSW1W 8QL: not on the flood risk listSW1W 8RH: not on the flood risk listSW1W 8SN: not on the flood risk listSW1W 8SP: not on the flood risk listSW1W 8SU: not on the flood risk listSW1W 8TH: not on the flood risk listSW1W 8TN: not on the flood risk listSW1W 8TP: not on the flood risk listSW1W 8TR: not on the flood risk listSW1W 8TS: not on the flood risk listSW1W 8TW: not on the flood risk listSW1W 8TY: not on the flood risk listSW1W 8TZ: not on the flood risk listSW1W 8UA: not on the flood risk listSW1W 8UG: not on the flood risk listSW1W 8UP: not on the flood risk listSW1W 8UQ: not on the flood risk listSW1W 8UT: not on the flood risk listSW1W 9AA: not on the flood risk listSW1W 9AD: not on the flood risk listSW1W 9AE: not on the flood risk listSW1W 9AG: not on the flood risk listSW1W 9AH: not on the flood risk listSW1W 9AL: not on the flood risk listSW1W 9AP: not on the flood risk listSW1W 9AQ: not on the flood risk listSW1W 9AR: not on the flood risk listSW1W 9AS: not on the flood risk listSW1W 9AW: not on the flood risk listSW1W 9AX: not on the flood risk listSW1W 9AZ: not on the flood risk listSW1W 9BA: not on the flood risk listSW1W 9BD: not on the flood risk listSW1W 9BE: not on the flood risk listSW1W 9BG: not on the flood risk listSW1W 9BJ: not on the flood risk listSW1W 9BQ: not on the flood risk listSW1W 9DA: not on the flood risk listSW1W 9DB: not on the flood risk listSW1W 9DD: not on the flood risk listSW1W 9DE: not on the flood risk listSW1W 9DF: not on the flood risk listSW1W 9DH: not on the flood risk listSW1W 9DP: not on the flood risk listSW1W 9DS: not on the flood risk listSW1W 9DU: not on the flood risk listSW1W 9DY: not on the flood risk listSW1W 9EA: not on the flood risk listSW1W 9EF: not on the flood risk listSW1W 9EG: not on the flood risk listSW1W 9EH: not on the flood risk listSW1W 9EL: not on the flood risk listSW1W 9EP: not on the flood risk listSW1W 9EQ: not on the flood risk listSW1W 9ER: not on the flood risk listSW1W 9ES: not on the flood risk listSW1W 9ET: not on the flood risk listSW1W 9HH: not on the flood risk listSW1W 9HJ: not on the flood risk listSW1W 9HP: not on the flood risk listSW1W 9HR: not on the flood risk listSW1W 9HS: not on the flood risk listSW1W 9HT: not on the flood risk listSW1W 9JA: not on the flood risk listSW1W 9JB: not on the flood risk listSW1W 9JD: not on the flood risk listSW1W 9JE: not on the flood risk listSW1W 9JF: not on the flood risk listSW1W 9JH: not on the flood risk listSW1W 9JJ: not on the flood risk listSW1W 9JL: not on the flood risk listSW1W 9JS: not on the flood risk listSW1W 9JT: not on the flood risk listSW1W 9JU: not on the flood risk listSW1W 9JX: not on the flood risk listSW1W 9LN: not on the flood risk listSW1W 9LS: not on the flood risk listSW1W 9LT: not on the flood risk listSW1W 9LX: not on the flood risk listSW1W 9ND: not on the flood risk listSW1W 9NE: not on the flood risk listSW1W 9NF: not on the flood risk listSW1W 9NP: not on the flood risk listSW1W 9NS: not on the flood risk listSW1W 9NU: not on the flood risk listSW1W 9NX: not on the flood risk listSW1W 9NY: not on the flood risk listSW1W 9NZ: not on the flood risk listSW1W 9PA: not on the flood risk listSW1W 9PB: not on the flood risk listSW1W 9PD: not on the flood risk listSW1W 9PE: not on the flood risk listSW1W 9PG: not on the flood risk listSW1W 9PJ: not on the flood risk listSW1W 9PP: not on the flood risk listSW1W 9PY: not on the flood risk listSW1W 9QB: not on the flood risk listSW1W 9QD: not on the flood risk listSW1W 9QG: not on the flood risk listSW1W 9QJ: not on the flood risk listSW1W 9QN: not on the flood risk listSW1W 9QQ: not on the flood risk listSW1W 9QU: not on the flood risk listSW1W 9RB: not on the flood risk listSW1W 9RH: not on the flood risk listSW1W 9RP: not on the flood risk listSW1W 9SA: not on the flood risk listSW1W 9SH: not on the flood risk listSW1W 9SJ: not on the flood risk listSW1W 9ST: not on the flood risk listSW1W 9SX: not on the flood risk listSW1W 9TJ: not on the flood risk listSW1W 9TN: not on the flood risk listSW1W 9TP: not on the flood risk listSW1W 9TR: not on the flood risk listSW1W 9UD: not on the flood risk listSW1W 9XA: not on the flood risk listSW1W 8AU: very low flood risk onlySW1W 8BE: very low flood risk onlySW1W 8BG: very low flood risk onlySW1W 8BQ: very low flood risk onlySW1W 8BT: very low flood risk onlySW1W 8DE: very low flood risk onlySW1W 8DQ: very low flood risk onlySW1W 8DS: very low flood risk onlySW1W 8DT: very low flood risk onlySW1W 8PQ: very low flood risk onlySW1W 8PT: very low flood risk onlySW1W 8PZ: very low flood risk onlySW1W 8QA: very low flood risk onlySW1W 8QB: very low flood risk onlySW1W 8QD: very low flood risk onlySW1W 8QE: very low flood risk onlySW1W 8QF: very low flood risk onlySW1W 8QG: very low flood risk onlySW1W 8QN: very low flood risk onlySW1W 8QX: very low flood risk onlySW1W 8QY: very low flood risk onlySW1W 8RB: very low flood risk onlySW1W 8RG: very low flood risk onlySW1W 8RP: very low flood risk onlySW1W 8RQ: very low flood risk onlySW1W 8RX: very low flood risk onlySW1W 8RY: very low flood risk onlySW1W 8RZ: very low flood risk onlySW1W 8SA: very low flood risk onlySW1W 8SH: very low flood risk onlySW1W 8SJ: very low flood risk onlySW1W 8SL: very low flood risk onlySW1W 8SR: very low flood risk onlySW1W 8SS: very low flood risk onlySW1W 8UN: very low flood risk onlySW1W 9SP: very low flood risk onlySW1W 9TB: very low flood risk only Knightsbridge & BelgraviaRoyal Hospital Map of every postcode in SW1W, by flood risk Of the 343 postcodes in SW1W that ONS places, 42 are at very low risk only and 301 are not on the Environment Agency's at-risk list. Places named: Knightsbridge & Belgravia, Royal Hospital. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. Knightsbridge & BelgraviaRoyal Hospital
  • A home or business at high risk: 0
  • At medium risk at worst: 0
  • At low risk at worst: 0
  • At very low risk only: 42
  • Not on the at-risk list: 301

Of the 343 postcodes in SW1W that ONS places, 42 are at very low risk only and 301 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 51.4927, longitude -0.1511. 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

What broadband can you get in SW1W?

Ofcom reports on 321 of the 343 postcodes in SW1W. At 208 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit208 of 321
Postcodes where every home can get superfast277 of 321

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 SW1W at risk of flooding?

42 of the 343 postcodes in SW1W 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 none of the homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 42 of 343 postcodes Very low: 1,041

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 SW1W?

Homes in SW1W sold for a typical £1,375,000 in the 12 months to August 2026, across 63 sales, down 20.7% on the 12 months before, HM Land Registry's figures show.

£1,375,000 typical price, the 12 months to August 2026
£1,735,000 12 months to August 2025
▼ down 20.7% on the 12 months before
  • Terraced £2,830,000 21 sales
  • Flat or maisonette £1,000,000 42 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 SW1W

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

SW1W 057 postcodesSW1W 8176 postcodesSW1W 9110 postcodes
UK postcode format explained

Places in SW1W

Towns and villages with postcodes in SW1W, and how many each has here.

City of Westminster postcodes,293Kensington and Chelsea postcodes,48Wandsworth postcodes,2

Who covers SW1W

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

  • Cities of London and Westminster289
  • Chelsea and Fulham52
  • Battersea2

Police force areas

  • Metropolitan Police343

Next to SW1W

SW1V postcode district SW1X postcode district All SW districts City of Westminster postcodes

"Next to" is by number: the districts before and after SW1W in the SW area.

Check a postcode

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