BN18 postcode district: Yapton and around, West Sussex

BN18 is a postcode district in West Sussex, with 588 postcodes in use in 3 sectors. It has postcodes in Yapton, Arundel, Walberton and 2 more places. It is split between 3 councils: Arun (558 postcodes), Horsham (29) and Chichester (1).

Postcodes in use
588
Sectors
3
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 BN18, by flood risk

Map of every postcode in BN18, by flood risk Of the 588 postcodes in BN18 that ONS places, 50 have a home or business at high risk, 14 are at medium risk at worst, 13 are at low risk at worst, 2 are at very low risk only and 509 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 14 postcodes at high or medium risk; 11 postcodes at high or medium risk. Places named: Yapton, Littlehampton, Barnham, Wick, Arundel, Walberton. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A29A259A284 BN18 0AA: not on the flood risk listBN18 0AB: not on the flood risk listBN18 0AD: not on the flood risk listBN18 0AE: not on the flood risk listBN18 0AF: not on the flood risk listBN18 0AG: not on the flood risk listBN18 0AH: not on the flood risk listBN18 0AJ: not on the flood risk listBN18 0AL: not on the flood risk listBN18 0AN: not on the flood risk listBN18 0AP: not on the flood risk listBN18 0AQ: not on the flood risk listBN18 0AR: not on the flood risk listBN18 0AS: not on the flood risk listBN18 0AU: not on the flood risk listBN18 0BA: not on the flood risk listBN18 0BB: not on the flood risk listBN18 0BD: not on the flood risk listBN18 0BE: not on the flood risk listBN18 0BF: not on the flood risk listBN18 0BG: not on the flood risk listBN18 0BL: not on the flood risk listBN18 0BN: not on the flood risk listBN18 0BQ: not on the flood risk listBN18 0BR: not on the flood risk listBN18 0BW: not on the flood risk listBN18 0BY: not on the flood risk listBN18 0BZ: not on the flood risk listBN18 0DA: not on the flood risk listBN18 0DD: not on the flood risk listBN18 0DE: not on the flood risk listBN18 0DG: not on the flood risk listBN18 0DH: not on the flood risk listBN18 0DL: not on the flood risk listBN18 0DN: not on the flood risk listBN18 0DP: not on the flood risk listBN18 0DQ: not on the flood risk listBN18 0DR: not on the flood risk listBN18 0DS: not on the flood risk listBN18 0DT: not on the flood risk listBN18 0DU: not on the flood risk listBN18 0DX: not on the flood risk listBN18 0DY: not on the flood risk listBN18 0DZ: not on the flood risk listBN18 0EA: not on the flood risk listBN18 0ED: not on the flood risk listBN18 0EE: not on the flood risk listBN18 0EF: not on the flood risk listBN18 0EG: not on the flood risk listBN18 0EH: not on the flood risk listBN18 0EJ: not on the flood risk listBN18 0EL: not on the flood risk listBN18 0EN: not on the flood risk listBN18 0EP: not on the flood risk listBN18 0ER: not on the flood risk listBN18 0ES: not on the flood risk listBN18 0EU: not on the flood risk listBN18 0EW: not on the flood risk listBN18 0EX: not on the flood risk listBN18 0EY: not on the flood risk listBN18 0FA: not on the flood risk listBN18 0FB: not on the flood risk listBN18 0FD: not on the flood risk listBN18 0FH: not on the flood risk listBN18 0FJ: not on the flood risk listBN18 0FL: not on the flood risk listBN18 0FN: not on the flood risk listBN18 0FQ: not on the flood risk listBN18 0FR: not on the flood risk listBN18 0FS: not on the flood risk listBN18 0FT: not on the flood risk listBN18 0FW: not on the flood risk listBN18 0FY: not on the flood risk listBN18 0GA: not on the flood risk listBN18 0GB: not on the flood risk listBN18 0GD: not on the flood risk listBN18 0GE: not on the flood risk listBN18 0GF: not on the flood risk listBN18 0GG: not on the flood risk listBN18 0GH: not on the flood risk listBN18 0GJ: not on the flood risk listBN18 0GL: not on the flood risk listBN18 0GN: not on the flood risk listBN18 0GR: not on the flood risk listBN18 0GS: not on the flood risk listBN18 0GT: not on the flood risk listBN18 0GU: not on the flood risk listBN18 0GW: not on the flood risk listBN18 0GX: not on the flood risk listBN18 0GZ: not on the flood risk listBN18 0HA: not on the flood risk listBN18 0HB: not on the flood risk listBN18 0HD: not on the flood risk listBN18 0HE: not on the flood risk listBN18 0HF: not on the flood risk listBN18 0HG: not on the flood risk listBN18 0HH: not on the flood risk listBN18 0HJ: not on the flood risk listBN18 0HL: not on the flood risk listBN18 0HN: not on the flood risk listBN18 0HQ: not on the flood risk listBN18 0HR: not on the flood risk listBN18 0HT: not on the flood risk listBN18 0HU: not on the flood risk listBN18 0HW: not on the flood risk listBN18 0HX: not on the flood risk listBN18 0HY: not on the flood risk listBN18 0HZ: not on the flood risk listBN18 0JA: not on the flood risk listBN18 0JB: not on the flood risk listBN18 0JF: not on the flood risk listBN18 0JG: not on the flood risk listBN18 0JJ: not on the flood risk listBN18 0JL: not on the flood risk listBN18 0JN: not on the flood risk listBN18 0JQ: not on the flood risk listBN18 0JR: not on the flood risk listBN18 0JS: not on the flood risk listBN18 0JU: not on the flood risk listBN18 0JW: not on the flood risk listBN18 0JY: not on the flood risk listBN18 0LA: not on the flood risk listBN18 0LB: not on the flood risk listBN18 0LD: not on the flood risk listBN18 0LF: not on the flood risk listBN18 0LG: not on the flood risk listBN18 0LH: not on the flood risk listBN18 0LJ: not on the flood risk listBN18 0LL: not on the flood risk listBN18 0LN: not on the flood risk listBN18 0LP: not on the flood risk listBN18 0LQ: not on the flood risk listBN18 0LR: not on the flood risk listBN18 0LS: not on the flood risk listBN18 0LT: not on the flood risk listBN18 0LU: not on the flood risk listBN18 0LW: not on the flood risk listBN18 0LX: not on the flood risk listBN18 0LY: not on the flood risk listBN18 0LZ: not on the flood risk listBN18 0NA: not on the flood risk listBN18 0NB: not on the flood risk listBN18 0ND: not on the flood risk listBN18 0NE: not on the flood risk listBN18 0NF: not on the flood risk listBN18 0NG: not on the flood risk listBN18 0NJ: not on the flood risk listBN18 0NL: not on the flood risk listBN18 0NN: not on the flood risk listBN18 0NP: not on the flood risk listBN18 0NQ: not on the flood risk listBN18 0NR: not on the flood risk listBN18 0NS: not on the flood risk listBN18 0NT: not on the flood risk listBN18 0NU: not on the flood risk listBN18 0NW: not on the flood risk listBN18 0NX: not on the flood risk listBN18 0PA: not on the flood risk listBN18 0PB: not on the flood risk listBN18 0PE: not on the flood risk listBN18 0PF: not on the flood risk listBN18 0PL: not on the flood risk listBN18 0PN: not on the flood risk listBN18 0PP: not on the flood risk listBN18 0PQ: not on the flood risk listBN18 0PS: not on the flood risk listBN18 0PT: not on the flood risk listBN18 0PU: not on the flood risk listBN18 0PW: not on the flood risk listBN18 0PX: not on the flood risk listBN18 0PY: not on the flood risk listBN18 0PZ: not on the flood risk listBN18 0QB: not on the flood risk listBN18 0QE: not on the flood risk listBN18 0QF: not on the flood risk listBN18 0QG: not on the flood risk listBN18 0QH: not on the flood risk listBN18 0QJ: not on the flood risk listBN18 0QN: not on the flood risk listBN18 0QP: not on the flood risk listBN18 0QR: not on the flood risk listBN18 0QS: not on the flood risk listBN18 0QT: not on the flood risk listBN18 0QU: not on the flood risk listBN18 0QW: not on the flood risk listBN18 0QX: not on the flood risk listBN18 0QY: not on the flood risk listBN18 0QZ: not on the flood risk listBN18 0RA: not on the flood risk listBN18 0RB: not on the flood risk listBN18 0RD: not on the flood risk listBN18 0RE: not on the flood risk listBN18 0RG: not on the flood risk listBN18 0RH: not on the flood risk listBN18 0RJ: not on the flood risk listBN18 0RL: not on the flood risk listBN18 0RN: not on the flood risk listBN18 0RP: not on the flood risk listBN18 0RQ: not on the flood risk listBN18 0RR: not on the flood risk listBN18 0RS: not on the flood risk listBN18 0RT: not on the flood risk listBN18 0RU: not on the flood risk listBN18 0RW: not on the flood risk listBN18 0RX: not on the flood risk listBN18 0RY: not on the flood risk listBN18 0SA: not on the flood risk listBN18 0SB: not on the flood risk listBN18 0SD: not on the flood risk listBN18 0SE: not on the flood risk listBN18 0SF: not on the flood risk listBN18 0SG: not on the flood risk listBN18 0SH: not on the flood risk listBN18 0SL: not on the flood risk listBN18 0SN: not on the flood risk listBN18 0SP: not on the flood risk listBN18 0SQ: not on the flood risk listBN18 0SR: not on the flood risk listBN18 0SS: not on the flood risk listBN18 0ST: not on the flood risk listBN18 0SU: not on the flood risk listBN18 0SX: not on the flood risk listBN18 0SY: not on the flood risk listBN18 0TA: not on the flood risk listBN18 0TB: not on the flood risk listBN18 0TD: not on the flood risk listBN18 0TF: not on the flood risk listBN18 0TG: not on the flood risk listBN18 0TH: not on the flood risk listBN18 0TJ: not on the flood risk listBN18 0TN: not on the flood risk listBN18 0TS: not on the flood risk listBN18 0UA: not on the flood risk listBN18 0UD: not on the flood risk listBN18 0UF: not on the flood risk listBN18 0UG: not on the flood risk listBN18 0UH: not on the flood risk listBN18 0UQ: not on the flood risk listBN18 0UR: not on the flood risk listBN18 0UU: not on the flood risk listBN18 0UW: not on the flood risk listBN18 0UX: not on the flood risk listBN18 0UY: not on the flood risk listBN18 0XA: not on the flood risk listBN18 0XE: not on the flood risk listBN18 0XH: not on the flood risk listBN18 0XJ: not on the flood risk listBN18 0XL: not on the flood risk listBN18 0XN: not on the flood risk listBN18 0XQ: not on the flood risk listBN18 0XR: not on the flood risk listBN18 0XS: not on the flood risk listBN18 0XT: not on the flood risk listBN18 0XU: not on the flood risk listBN18 0XW: not on the flood risk listBN18 0XZ: not on the flood risk listBN18 0YA: not on the flood risk listBN18 0YE: not on the flood risk listBN18 0YF: not on the flood risk listBN18 0YH: not on the flood risk listBN18 0YN: not on the flood risk listBN18 0YR: not on the flood risk listBN18 0YT: not on the flood risk listBN18 0YU: not on the flood risk listBN18 0YW: not on the flood risk listBN18 0YY: not on the flood risk listBN18 0YZ: not on the flood risk listBN18 0ZB: not on the flood risk listBN18 0ZD: not on the flood risk listBN18 0ZE: not on the flood risk listBN18 0ZH: not on the flood risk listBN18 0ZJ: not on the flood risk listBN18 0ZN: not on the flood risk listBN18 0ZP: not on the flood risk listBN18 0ZQ: not on the flood risk listBN18 0ZT: not on the flood risk listBN18 0ZX: not on the flood risk listBN18 8DF: not on the flood risk listBN18 9AB: not on the flood risk listBN18 9AH: not on the flood risk listBN18 9AJ: not on the flood risk listBN18 9AS: not on the flood risk listBN18 9AT: not on the flood risk listBN18 9AU: not on the flood risk listBN18 9AX: not on the flood risk listBN18 9AY: not on the flood risk listBN18 9BB: not on the flood risk listBN18 9BD: not on the flood risk listBN18 9BE: not on the flood risk listBN18 9BG: not on the flood risk listBN18 9BH: not on the flood risk listBN18 9BL: not on the flood risk listBN18 9BQ: not on the flood risk listBN18 9BU: not on the flood risk listBN18 9DA: not on the flood risk listBN18 9DN: not on the flood risk listBN18 9ED: not on the flood risk listBN18 9EE: not on the flood risk listBN18 9EH: not on the flood risk listBN18 9EJ: not on the flood risk listBN18 9EL: not on the flood risk listBN18 9EP: not on the flood risk listBN18 9ER: not on the flood risk listBN18 9ES: not on the flood risk listBN18 9ET: not on the flood risk listBN18 9FD: not on the flood risk listBN18 9FH: not on the flood risk listBN18 9GA: not on the flood risk listBN18 9GG: not on the flood risk listBN18 9GJ: not on the flood risk listBN18 9GP: not on the flood risk listBN18 9GQ: not on the flood risk listBN18 9HD: not on the flood risk listBN18 9HE: not on the flood risk listBN18 9HF: not on the flood risk listBN18 9HG: not on the flood risk listBN18 9HH: not on the flood risk listBN18 9HJ: not on the flood risk listBN18 9HL: not on the flood risk listBN18 9HN: not on the flood risk listBN18 9HP: not on the flood risk listBN18 9HR: not on the flood risk listBN18 9HS: not on the flood risk listBN18 9HT: not on the flood risk listBN18 9HU: not on the flood risk listBN18 9HW: not on the flood risk listBN18 9HX: not on the flood risk listBN18 9HY: not on the flood risk listBN18 9HZ: not on the flood risk listBN18 9JB: not on the flood risk listBN18 9JD: not on the flood risk listBN18 9JE: not on the flood risk listBN18 9JX: not on the flood risk listBN18 9LB: not on the flood risk listBN18 9LG: not on the flood risk listBN18 9LJ: not on the flood risk listBN18 9LL: not on the flood risk listBN18 9LN: not on the flood risk listBN18 9LX: not on the flood risk listBN18 9LY: not on the flood risk listBN18 9LZ: not on the flood risk listBN18 9NE: not on the flood risk listBN18 9NG: not on the flood risk listBN18 9NJ: not on the flood risk listBN18 9NP: not on the flood risk listBN18 9NR: not on the flood risk listBN18 9NT: not on the flood risk listBN18 9NW: not on the flood risk listBN18 9NX: not on the flood risk listBN18 9PE: not on the flood risk listBN18 9PG: not on the flood risk listBN18 9PJ: not on the flood risk listBN18 9PL: not on the flood risk listBN18 9PP: not on the flood risk listBN18 9PQ: not on the flood risk listBN18 9PR: not on the flood risk listBN18 9PS: not on the flood risk listBN18 9PU: not on the flood risk listBN18 9PW: not on the flood risk listBN18 9PX: not on the flood risk listBN18 9PY: not on the flood risk listBN18 9PZ: not on the flood risk listBN18 9QA: not on the flood risk listBN18 9QF: not on the flood risk listBN18 9QG: not on the flood risk listBN18 9QH: not on the flood risk listBN18 9QU: not on the flood risk listBN18 9QW: not on the flood risk listBN18 9QX: not on the flood risk listBN18 9QZ: not on the flood risk listBN18 9RA: not on the flood risk listBN18 9RF: not on the flood risk listBN18 9RJ: not on the flood risk listBN18 9RL: not on the flood risk listBN18 9RN: not on the flood risk listBN18 9RQ: not on the flood risk listBN18 9RR: not on the flood risk listBN18 9RW: not on the flood risk listBN18 0EB: very low flood risk onlyBN18 9QL: very low flood risk onlyBN18 0AZ: low flood risk at worstBN18 0BX: low flood risk at worstBN18 0DB: low flood risk at worstBN18 0DF: low flood risk at worstBN18 0JZ: low flood risk at worstBN18 0UZ: low flood risk at worstBN18 9DW: low flood risk at worstBN18 9JT: low flood risk at worstBN18 9PH: low flood risk at worstBN18 9PT: low flood risk at worstBN18 0AY: medium flood risk at worstBN18 0TR: medium flood risk at worstBN18 9DT: medium flood risk at worstBN18 9DU: medium flood risk at worstBN18 9FL: medium flood risk at worstBN18 9FN: medium flood risk at worstBN18 9JQ: medium flood risk at worstBN18 9JU: medium flood risk at worstBN18 9LE: medium flood risk at worstBN18 9LT: medium flood risk at worstBN18 9PD: medium flood risk at worstBN18 0AT: high flood riskBN18 0AX: high flood riskBN18 0BH: high flood riskBN18 0BJ: high flood riskBN18 0BT: high flood riskBN18 0BU: high flood riskBN18 0FP: high flood riskBN18 0JX: high flood riskBN18 9DF: high flood riskBN18 9DH: high flood riskBN18 9EY: high flood riskBN18 9DX: high flood riskBN18 9EB: high flood riskBN18 9EU: high flood riskBN18 9EX: high flood riskBN18 9JG: high flood riskBN18 9FF: high flood riskBN18 9GY: high flood riskBN18 9JF: high flood riskBN18 9JJ: high flood riskBN18 9JL: high flood riskBN18 9JN: high flood riskBN18 9JS: high flood riskBN18 9JY: high flood riskBN18 9JZ: high flood riskBN18 9LP: high flood riskBN18 9LR: high flood riskBN18 9LS: high flood riskBN18 9LU: high flood riskBN18 9LW: high flood riskBN18 9NA: high flood riskBN18 9NB: high flood riskBN18 9ND: high flood riskBN18 9NF: high flood riskBN18 9NQ: high flood riskBN18 9SR: high flood riskBN18 9NN: high flood riskBN18 9PA: high flood riskBN18 9PB: high flood riskBN18 9PF: high flood riskBN18 9QN: high flood riskBN18 9QT: high flood riskBN18 9QY: high flood riskBN18 9RD: high flood riskBN18 9RE: high flood riskBN18 9RH: high flood riskBN18 9SA: high flood riskBN18 9SU: high flood risk YaptonLittlehamptonBarnhamWickArundelWalberton 14 postcodes at high or medium risk, outlined: this goes to BN18 9JP, the one with most homes and businesses at high risk14 postcodes at high or medium risk11 postcodes at high or medium risk, outlined: this goes to BN18 9JN, the one with most homes and businesses at high risk11 postcodes at high or medium risk Map of every postcode in BN18, by flood risk Of the 588 postcodes in BN18 that ONS places, 50 have a home or business at high risk, 14 are at medium risk at worst, 13 are at low risk at worst, 2 are at very low risk only and 509 are not on the Environment Agency's at-risk list. 2 groups of postcodes at high or medium risk are outlined: 14 postcodes at high or medium risk; 11 postcodes at high or medium risk. Places named: Yapton, Littlehampton, Barnham, Wick. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. A259A284 YaptonLittlehamptonBarnhamWick
  • A home or business at high risk: 50
  • At medium risk at worst: 14
  • At low risk at worst: 13
  • At very low risk only: 2
  • Not on the at-risk list: 509
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 588 postcodes in BN18 that ONS places, 50 have a home or business at high risk, 14 are at medium risk at worst, 13 are at low risk at worst, 2 are at very low risk only and 509 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 160 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 50.8455, longitude -0.5904. 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

50 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.

BN18 9JP38 at high riskBN18 9JZ35 at high riskBN18 0BU24 at high riskBN18 9SA21 at high riskBN18 9JN21 at high riskBN18 9JL20 at high riskBN18 9FF17 at high riskBN18 9JJ15 at high riskBN18 9EX15 at high riskBN18 9GY14 at high riskBN18 9PA13 at high riskBN18 9PB10 at high risk

Where the postcodes at high or medium risk lie together

  • 14 postcodes at high or medium risk, outlined on the map. BN18 9JP, is the one with most homes and businesses at high risk.
  • 11 postcodes at high or medium risk, outlined on the map. BN18 9JN, is the one with most homes and businesses at high risk.

What broadband can you get in BN18?

Ofcom reports on 564 of the 588 postcodes in BN18. At 325 of them every home and business can get gigabit broadband, and at 5 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit325 of 564
Postcodes where every home can get superfast490 of 564
Postcodes where some cannot get decent broadband5 of 564

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 BN18 at risk of flooding?

79 of the 588 postcodes in BN18 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 614 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 79 of 588 postcodes High: 337Medium: 277Low: 272Very low: 43

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 BN18?

Homes in BN18 sold for a typical £395,000 in the 12 months to August 2026, across 220 sales, up 1.3% on the 12 months before, HM Land Registry's figures show.

£395,000 typical price, the 12 months to August 2026
12 months to August 2025
£389,995
12 months to August 2026
£395,000

▲ up 1.3% on the 12 months before

Detached£510,000 80 sales
Semi-detached£358,000 63 sales
Terraced£332,500 56 sales
Flat or maisonette£237,000 21 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 BN18

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

BN18 0364 postcodesBN18 88 postcodesBN18 9216 postcodes
UK postcode format explained

Places in BN18

Towns and villages with postcodes in BN18, and how many each has here.

Yapton postcodes,140Arundel postcodes,133Walberton postcodes,54Barnham postcodes,39Littlehampton postcodes,1

Who covers BN18

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

  • Arundel and South Downs394
  • Bognor Regis and Littlehampton186
  • Worthing West8

Police force areas

  • Sussex588

Next to BN18

BN17 postcode district BN20 postcode district All BN districts Yapton postcodes

"Next to" is by number: the districts before and after BN18 in the BN area.

Check a postcode

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