RH18 postcode district: Forest Row and around

RH18 is a postcode district mostly in East Sussex, with 141 postcodes in use in 1 sector. It has postcodes in Forest Row and East Grinstead. It is split between 2 councils: Wealden (140 postcodes) and Mid Sussex (1). 140 are in East Sussex and 1 in West Sussex.

Postcodes in use
141
Sectors
1
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 RH18, by flood risk

Map of every postcode in RH18, by flood risk Of the 141 postcodes in RH18 that ONS places, 13 have a home or business at high risk, 7 are at medium risk at worst, 11 are at low risk at worst and 110 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Forest Row. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A275 RH18 5AA: not on the flood risk listRH18 5AD: not on the flood risk listRH18 5AF: not on the flood risk listRH18 5AH: not on the flood risk listRH18 5AJ: not on the flood risk listRH18 5AN: not on the flood risk listRH18 5AP: not on the flood risk listRH18 5AQ: not on the flood risk listRH18 5AR: not on the flood risk listRH18 5AS: not on the flood risk listRH18 5AT: not on the flood risk listRH18 5AX: not on the flood risk listRH18 5AY: not on the flood risk listRH18 5AZ: not on the flood risk listRH18 5BA: not on the flood risk listRH18 5BD: not on the flood risk listRH18 5BF: not on the flood risk listRH18 5BG: not on the flood risk listRH18 5BH: not on the flood risk listRH18 5BJ: not on the flood risk listRH18 5BN: not on the flood risk listRH18 5BP: not on the flood risk listRH18 5BQ: not on the flood risk listRH18 5BS: not on the flood risk listRH18 5BU: not on the flood risk listRH18 5BW: not on the flood risk listRH18 5BX: not on the flood risk listRH18 5BZ: not on the flood risk listRH18 5DA: not on the flood risk listRH18 5DB: not on the flood risk listRH18 5DF: not on the flood risk listRH18 5DG: not on the flood risk listRH18 5DJ: not on the flood risk listRH18 5DL: not on the flood risk listRH18 5DN: not on the flood risk listRH18 5DQ: not on the flood risk listRH18 5DR: not on the flood risk listRH18 5DS: not on the flood risk listRH18 5DT: not on the flood risk listRH18 5DX: not on the flood risk listRH18 5DZ: not on the flood risk listRH18 5EB: not on the flood risk listRH18 5ED: not on the flood risk listRH18 5EG: not on the flood risk listRH18 5EJ: not on the flood risk listRH18 5EN: not on the flood risk listRH18 5EP: not on the flood risk listRH18 5ER: not on the flood risk listRH18 5ES: not on the flood risk listRH18 5FU: not on the flood risk listRH18 5FX: not on the flood risk listRH18 5GA: not on the flood risk listRH18 5GD: not on the flood risk listRH18 5GE: not on the flood risk listRH18 5GS: not on the flood risk listRH18 5HG: not on the flood risk listRH18 5HH: not on the flood risk listRH18 5HL: not on the flood risk listRH18 5HN: not on the flood risk listRH18 5HQ: not on the flood risk listRH18 5HR: not on the flood risk listRH18 5HS: not on the flood risk listRH18 5JA: not on the flood risk listRH18 5JD: not on the flood risk listRH18 5JE: not on the flood risk listRH18 5JF: not on the flood risk listRH18 5JG: not on the flood risk listRH18 5JH: not on the flood risk listRH18 5JJ: not on the flood risk listRH18 5JL: not on the flood risk listRH18 5JN: not on the flood risk listRH18 5JP: not on the flood risk listRH18 5JQ: not on the flood risk listRH18 5JR: not on the flood risk listRH18 5JS: not on the flood risk listRH18 5JU: not on the flood risk listRH18 5JW: not on the flood risk listRH18 5JX: not on the flood risk listRH18 5JZ: not on the flood risk listRH18 5LA: not on the flood risk listRH18 5LF: not on the flood risk listRH18 5LG: not on the flood risk listRH18 5LH: not on the flood risk listRH18 5LJ: not on the flood risk listRH18 5LL: not on the flood risk listRH18 5LN: not on the flood risk listRH18 5LP: not on the flood risk listRH18 5LS: not on the flood risk listRH18 5LT: not on the flood risk listRH18 5LU: not on the flood risk listRH18 5LW: not on the flood risk listRH18 5LZ: not on the flood risk listRH18 5NA: not on the flood risk listRH18 5NB: not on the flood risk listRH18 5ND: not on the flood risk listRH18 5NE: not on the flood risk listRH18 5NF: not on the flood risk listRH18 5NG: not on the flood risk listRH18 5NS: not on the flood risk listRH18 5WY: not on the flood risk listRH18 5BY: low flood risk at worstRH18 5DP: low flood risk at worstRH18 5DY: low flood risk at worstRH18 5EA: low flood risk at worstRH18 5EE: low flood risk at worstRH18 5EW: low flood risk at worstRH18 5HD: low flood risk at worstRH18 5NN: low flood risk at worstRH18 5NT: low flood risk at worstRH18 5NU: low flood risk at worstRH18 5EF: medium flood risk at worstRH18 5FW: medium flood risk at worstRH18 5HB: medium flood risk at worstRH18 5HP: medium flood risk at worstRH18 5LY: medium flood risk at worstRH18 5LX: medium flood risk at worstRH18 5PA: medium flood risk at worstRH18 5DD: high flood riskRH18 5DE: high flood riskRH18 5DW: high flood riskRH18 5EH: high flood riskRH18 5EL: high flood riskRH18 5EU: high flood riskRH18 5EZ: high flood riskRH18 5FS: high flood riskRH18 5FY: high flood riskRH18 5HE: high flood riskRH18 5HF: high flood riskRH18 5HT: high flood riskRH18 5LR: high flood risk Forest Row 10 postcodes at high or medium risk, outlined: this goes to RH18 5HF, the one with most homes and businesses at high risk10 postcodes at high or medium risk Map of every postcode in RH18, by flood risk Of the 141 postcodes in RH18 that ONS places, 13 have a home or business at high risk, 7 are at medium risk at worst, 11 are at low risk at worst and 110 are not on the Environment Agency's at-risk list. One group of postcodes at high or medium risk is outlined: 10 postcodes at high or medium risk. Places named: Forest Row. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. Forest Row
  • A home or business at high risk: 13
  • At medium risk at worst: 7
  • At low risk at worst: 11
  • At very low risk only: 0
  • Not on the at-risk list: 110
  • Outline: where 5 or more postcodes at high or medium risk lie together

Of the 141 postcodes in RH18 that ONS places, 13 have a home or business at high risk, 7 are at medium risk at worst, 11 are at low risk at worst and 110 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 190 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 51.0929, longitude 0.0358. 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

13 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.

RH18 5HF13 at high riskRH18 5FS12 at high riskRH18 5EZ8 at high riskRH18 5DD5 at high riskRH18 5LR3 at high riskRH18 5EU2 at high riskRH18 5DW2 at high riskRH18 5HE1 at high riskRH18 5DE1 at high riskRH18 5EL1 at high riskRH18 5EH1 at high riskRH18 5FY1 at high risk

Where the postcodes at high or medium risk lie together

  • 10 postcodes at high or medium risk, outlined on the map. RH18 5HF, is the one with most homes and businesses at high risk.

What broadband can you get in RH18?

Ofcom reports on 140 of the 141 postcodes in RH18. At 75 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit75 of 140
Postcodes where every home can get superfast130 of 140
Postcodes where some cannot get decent broadband1 of 140

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 RH18 at risk of flooding?

31 of the 141 postcodes in RH18 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 82 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 31 of 141 postcodes High: 51Medium: 31Low: 137

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 RH18?

Homes in RH18 sold for a typical £525,000 in the 12 months to August 2026, across 43 sales, up 18.6% on the 12 months before, HM Land Registry's figures show.

£525,000 typical price, the 12 months to August 2026
12 months to August 2025
£442,500
12 months to August 2026
£525,000

▲ up 18.6% on the 12 months before

Detached£670,000 22 sales
Semi-detached£460,000 13 sales
Terraced 4 sales, too few to price
Flat or maisonette 4 sales, too few to price

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 RH18

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

RH18 5141 postcodes
UK postcode format explained

Places in RH18

Towns and villages with postcodes in RH18, and how many each has here.

Forest Row postcodes,112East Grinstead postcodes,1

Who covers RH18

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

  • East Grinstead and Uckfield120
  • Sussex Weald21

Police force areas

  • Sussex141

Next to RH18

RH17 postcode district RH19 postcode district All RH districts Forest Row postcodes

"Next to" is by number: the districts before and after RH18 in the RH area.

Check a postcode

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