IP18 postcode district: Southwold and around, Suffolk

IP18 is a postcode district in Suffolk, with 295 postcodes in use in 1 sector. It has postcodes in Southwold and Reydon. Its council is East Suffolk.

Postcodes in use
295
Sectors
1
Council
East Suffolk
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 IP18, by flood risk

Map of every postcode in IP18, by flood risk Of the 295 postcodes in IP18 that ONS places, 18 have a home or business at high risk, 4 are at medium risk at worst, 17 are at low risk at worst, 23 are at very low risk only and 233 are not on the Environment Agency's at-risk list. Places named: Southwold, Reydon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 500 m. IP18 6AA: not on the flood risk listIP18 6AD: not on the flood risk listIP18 6AF: not on the flood risk listIP18 6AG: not on the flood risk listIP18 6AH: not on the flood risk listIP18 6AJ: not on the flood risk listIP18 6AL: not on the flood risk listIP18 6AN: not on the flood risk listIP18 6AP: not on the flood risk listIP18 6AQ: not on the flood risk listIP18 6AR: not on the flood risk listIP18 6AS: not on the flood risk listIP18 6AT: not on the flood risk listIP18 6AU: not on the flood risk listIP18 6AW: not on the flood risk listIP18 6AX: not on the flood risk listIP18 6AY: not on the flood risk listIP18 6BA: not on the flood risk listIP18 6BD: not on the flood risk listIP18 6BP: not on the flood risk listIP18 6BS: not on the flood risk listIP18 6BT: not on the flood risk listIP18 6BU: not on the flood risk listIP18 6BW: not on the flood risk listIP18 6BX: not on the flood risk listIP18 6BZ: not on the flood risk listIP18 6DA: not on the flood risk listIP18 6DB: not on the flood risk listIP18 6DD: not on the flood risk listIP18 6DE: not on the flood risk listIP18 6DJ: not on the flood risk listIP18 6DL: not on the flood risk listIP18 6DN: not on the flood risk listIP18 6DP: not on the flood risk listIP18 6DQ: not on the flood risk listIP18 6DS: not on the flood risk listIP18 6EA: not on the flood risk listIP18 6ED: not on the flood risk listIP18 6EE: not on the flood risk listIP18 6EF: not on the flood risk listIP18 6EH: not on the flood risk listIP18 6EJ: not on the flood risk listIP18 6EN: not on the flood risk listIP18 6EP: not on the flood risk listIP18 6EQ: not on the flood risk listIP18 6ER: not on the flood risk listIP18 6ES: not on the flood risk listIP18 6ET: not on the flood risk listIP18 6EU: not on the flood risk listIP18 6EZ: not on the flood risk listIP18 6FA: not on the flood risk listIP18 6FB: not on the flood risk listIP18 6FD: not on the flood risk listIP18 6FE: not on the flood risk listIP18 6FF: not on the flood risk listIP18 6FJ: not on the flood risk listIP18 6GB: not on the flood risk listIP18 6GH: not on the flood risk listIP18 6GL: not on the flood risk listIP18 6GX: not on the flood risk listIP18 6GY: not on the flood risk listIP18 6HA: not on the flood risk listIP18 6HB: not on the flood risk listIP18 6HD: not on the flood risk listIP18 6HF: not on the flood risk listIP18 6HL: not on the flood risk listIP18 6HN: not on the flood risk listIP18 6HP: not on the flood risk listIP18 6HS: not on the flood risk listIP18 6HT: not on the flood risk listIP18 6HW: not on the flood risk listIP18 6HX: not on the flood risk listIP18 6HY: not on the flood risk listIP18 6HZ: not on the flood risk listIP18 6JA: not on the flood risk listIP18 6JB: not on the flood risk listIP18 6JD: not on the flood risk listIP18 6JE: not on the flood risk listIP18 6JG: not on the flood risk listIP18 6JH: not on the flood risk listIP18 6JJ: not on the flood risk listIP18 6JL: not on the flood risk listIP18 6JN: not on the flood risk listIP18 6JP: not on the flood risk listIP18 6JQ: not on the flood risk listIP18 6JS: not on the flood risk listIP18 6JT: not on the flood risk listIP18 6JU: not on the flood risk listIP18 6JW: not on the flood risk listIP18 6JZ: not on the flood risk listIP18 6LA: not on the flood risk listIP18 6LB: not on the flood risk listIP18 6LD: not on the flood risk listIP18 6LE: not on the flood risk listIP18 6LF: not on the flood risk listIP18 6LG: not on the flood risk listIP18 6LH: not on the flood risk listIP18 6LJ: not on the flood risk listIP18 6LL: not on the flood risk listIP18 6LN: not on the flood risk listIP18 6LQ: not on the flood risk listIP18 6LR: not on the flood risk listIP18 6LS: not on the flood risk listIP18 6LW: not on the flood risk listIP18 6LX: not on the flood risk listIP18 6LY: not on the flood risk listIP18 6NG: not on the flood risk listIP18 6NH: not on the flood risk listIP18 6NJ: not on the flood risk listIP18 6NL: not on the flood risk listIP18 6NN: not on the flood risk listIP18 6NP: not on the flood risk listIP18 6NR: not on the flood risk listIP18 6NS: not on the flood risk listIP18 6NT: not on the flood risk listIP18 6NU: not on the flood risk listIP18 6NX: not on the flood risk listIP18 6NY: not on the flood risk listIP18 6NZ: not on the flood risk listIP18 6PA: not on the flood risk listIP18 6PB: not on the flood risk listIP18 6PD: not on the flood risk listIP18 6PE: not on the flood risk listIP18 6PF: not on the flood risk listIP18 6PG: not on the flood risk listIP18 6PH: not on the flood risk listIP18 6PJ: not on the flood risk listIP18 6PL: not on the flood risk listIP18 6PN: not on the flood risk listIP18 6PP: not on the flood risk listIP18 6PQ: not on the flood risk listIP18 6PR: not on the flood risk listIP18 6PU: not on the flood risk listIP18 6PW: not on the flood risk listIP18 6PX: not on the flood risk listIP18 6PY: not on the flood risk listIP18 6PZ: not on the flood risk listIP18 6QA: not on the flood risk listIP18 6QB: not on the flood risk listIP18 6QD: not on the flood risk listIP18 6QE: not on the flood risk listIP18 6QF: not on the flood risk listIP18 6QG: not on the flood risk listIP18 6QH: not on the flood risk listIP18 6QJ: not on the flood risk listIP18 6QL: not on the flood risk listIP18 6QN: not on the flood risk listIP18 6QP: not on the flood risk listIP18 6QQ: not on the flood risk listIP18 6QR: not on the flood risk listIP18 6QS: not on the flood risk listIP18 6QT: not on the flood risk listIP18 6QU: not on the flood risk listIP18 6QW: not on the flood risk listIP18 6QX: not on the flood risk listIP18 6QY: not on the flood risk listIP18 6QZ: not on the flood risk listIP18 6RA: not on the flood risk listIP18 6RB: not on the flood risk listIP18 6RJ: not on the flood risk listIP18 6RP: not on the flood risk listIP18 6RQ: not on the flood risk listIP18 6RT: not on the flood risk listIP18 6RU: not on the flood risk listIP18 6RW: not on the flood risk listIP18 6RY: not on the flood risk listIP18 6RZ: not on the flood risk listIP18 6SD: not on the flood risk listIP18 6SE: not on the flood risk listIP18 6SJ: not on the flood risk listIP18 6SL: not on the flood risk listIP18 6SP: not on the flood risk listIP18 6SR: not on the flood risk listIP18 6SS: not on the flood risk listIP18 6SU: not on the flood risk listIP18 6SW: not on the flood risk listIP18 6SX: not on the flood risk listIP18 6SY: not on the flood risk listIP18 6SZ: not on the flood risk listIP18 6TB: not on the flood risk listIP18 6TE: not on the flood risk listIP18 6TF: not on the flood risk listIP18 6TG: not on the flood risk listIP18 6TP: not on the flood risk listIP18 6TQ: not on the flood risk listIP18 6TW: not on the flood risk listIP18 6UB: not on the flood risk listIP18 6UE: not on the flood risk listIP18 6UF: not on the flood risk listIP18 6UG: not on the flood risk listIP18 6UH: not on the flood risk listIP18 6UJ: not on the flood risk listIP18 6UL: not on the flood risk listIP18 6UN: not on the flood risk listIP18 6UP: not on the flood risk listIP18 6UR: not on the flood risk listIP18 6UT: not on the flood risk listIP18 6UU: not on the flood risk listIP18 6UW: not on the flood risk listIP18 6UX: not on the flood risk listIP18 6UY: not on the flood risk listIP18 6UZ: not on the flood risk listIP18 6WA: not on the flood risk listIP18 6WF: not on the flood risk listIP18 6WG: not on the flood risk listIP18 6XA: not on the flood risk listIP18 6XB: not on the flood risk listIP18 6XD: not on the flood risk listIP18 6XE: not on the flood risk listIP18 6XF: not on the flood risk listIP18 6XH: not on the flood risk listIP18 6XJ: not on the flood risk listIP18 6XL: not on the flood risk listIP18 6XN: not on the flood risk listIP18 6XW: not on the flood risk listIP18 6YA: not on the flood risk listIP18 6YD: not on the flood risk listIP18 6YE: not on the flood risk listIP18 6YF: not on the flood risk listIP18 6YS: not on the flood risk listIP18 6BG: very low flood risk onlyIP18 6BJ: very low flood risk onlyIP18 6BL: very low flood risk onlyIP18 6BQ: very low flood risk onlyIP18 6DH: very low flood risk onlyIP18 6DR: very low flood risk onlyIP18 6DU: very low flood risk onlyIP18 6GZ: very low flood risk onlyIP18 6HR: very low flood risk onlyIP18 6NF: very low flood risk onlyIP18 6NQ: very low flood risk onlyIP18 6NW: very low flood risk onlyIP18 6PS: very low flood risk onlyIP18 6PT: very low flood risk onlyIP18 6RD: very low flood risk onlyIP18 6RE: very low flood risk onlyIP18 6RF: very low flood risk onlyIP18 6RG: very low flood risk onlyIP18 6RL: very low flood risk onlyIP18 6RN: very low flood risk onlyIP18 6RS: very low flood risk onlyIP18 6TZ: very low flood risk onlyIP18 6YB: very low flood risk onlyIP18 6BB: low flood risk at worstIP18 6BE: low flood risk at worstIP18 6EL: low flood risk at worstIP18 6HE: low flood risk at worstIP18 6HG: low flood risk at worstIP18 6HJ: low flood risk at worstIP18 6LP: low flood risk at worstIP18 6LU: low flood risk at worstIP18 6SQ: low flood risk at worstIP18 6TL: low flood risk at worstIP18 6TN: low flood risk at worstIP18 6TS: low flood risk at worstIP18 6TT: low flood risk at worstIP18 6TU: low flood risk at worstIP18 6TX: low flood risk at worstIP18 6TY: low flood risk at worstIP18 6UA: low flood risk at worstIP18 6AZ: medium flood risk at worstIP18 6BH: medium flood risk at worstIP18 6RH: medium flood risk at worstIP18 6RR: medium flood risk at worstIP18 6BN: high flood riskIP18 6EY: high flood riskIP18 6HQ: high flood riskIP18 6LT: high flood riskIP18 6NB: high flood riskIP18 6ND: high flood riskIP18 6SB: high flood riskIP18 6SF: high flood riskIP18 6SG: high flood riskIP18 6SH: high flood riskIP18 6SN: high flood riskIP18 6TA: high flood riskIP18 6TD: high flood riskIP18 6TH: high flood riskIP18 6TJ: high flood riskIP18 6TR: high flood riskIP18 6UD: high flood riskIP18 6UQ: high flood risk SouthwoldReydon Map of every postcode in IP18, by flood risk Of the 295 postcodes in IP18 that ONS places, 18 have a home or business at high risk, 4 are at medium risk at worst, 17 are at low risk at worst, 23 are at very low risk only and 233 are not on the Environment Agency's at-risk list. Places named: Southwold, Reydon. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. SouthwoldReydon
  • A home or business at high risk: 18
  • At medium risk at worst: 4
  • At low risk at worst: 17
  • At very low risk only: 23
  • Not on the at-risk list: 233

Of the 295 postcodes in IP18 that ONS places, 18 have a home or business at high risk, 4 are at medium risk at worst, 17 are at low risk at worst, 23 are at very low risk only and 233 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.

The middle of its postcodes: latitude 52.3305, longitude 1.6704. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

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

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

IP18 6TA107 at high riskIP18 6HQ21 at high riskIP18 6TJ13 at high riskIP18 6TH6 at high riskIP18 6TR5 at high riskIP18 6NB4 at high riskIP18 6SB2 at high riskIP18 6SH2 at high riskIP18 6ND1 at high riskIP18 6TD1 at high riskIP18 6BN1 at high riskIP18 6EY1 at high risk

What broadband can you get in IP18?

Ofcom reports on 292 of the 295 postcodes in IP18. At 210 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit210 of 292
Postcodes where every home can get superfast276 of 292

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 IP18 at risk of flooding?

62 of the 295 postcodes in IP18 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 180 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 62 of 295 postcodes High: 170Medium: 10Low: 89Very low: 167

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 IP18?

Homes in IP18 sold for a typical £430,000 in the 12 months to August 2026, across 70 sales, down 3.6% on the 12 months before, HM Land Registry's figures show.

£430,000 typical price, the 12 months to August 2026
£446,000 12 months to August 2025
▼ down 3.6% on the 12 months before
  • Detached £584,975 30 sales
  • Semi-detached £370,000 11 sales
  • Terraced £270,000 21 sales
  • Flat or maisonette £268,000 8 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 IP18

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

IP18 6295 postcodes
UK postcode format explained

Places in IP18

Towns and villages with postcodes in IP18, and how many each has here.

Southwold postcodes,129Reydon postcodes,102

Who covers IP18

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

  • Suffolk Coastal295

Police force areas

  • Suffolk295

Next to IP18

IP17 postcode district IP19 postcode district All IP districts Southwold postcodes

"Next to" is by number: the districts before and after IP18 in the IP area.

Check a postcode

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