IP20 postcode district: Harleston and around

IP20 is a postcode district mostly in Norfolk, with 323 postcodes in use in 2 sectors. It has postcodes in Harleston. It is split between 3 councils: South Norfolk (258 postcodes), Mid Suffolk (45) and East Suffolk (20). 258 are in Norfolk and 65 in Suffolk.

Postcodes in use
323
Sectors
2
Councils
3 councils
Places
Harleston

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in IP20, by flood risk

Map of every postcode in IP20, by flood risk Of the 323 postcodes in IP20 that ONS places, 25 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 287 are not on the Environment Agency's at-risk list. Places named: Harleston. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A143 IP20 0AA: not on the flood risk listIP20 0AB: not on the flood risk listIP20 0AD: not on the flood risk listIP20 0AF: not on the flood risk listIP20 0AG: not on the flood risk listIP20 0AH: not on the flood risk listIP20 0AJ: not on the flood risk listIP20 0AL: not on the flood risk listIP20 0AN: not on the flood risk listIP20 0AP: not on the flood risk listIP20 0AQ: not on the flood risk listIP20 0AR: not on the flood risk listIP20 0AS: not on the flood risk listIP20 0AU: not on the flood risk listIP20 0AW: not on the flood risk listIP20 0AX: not on the flood risk listIP20 0AY: not on the flood risk listIP20 0AZ: not on the flood risk listIP20 0BA: not on the flood risk listIP20 0BB: not on the flood risk listIP20 0BD: not on the flood risk listIP20 0BE: not on the flood risk listIP20 0BF: not on the flood risk listIP20 0BL: not on the flood risk listIP20 0BP: not on the flood risk listIP20 0BS: not on the flood risk listIP20 0BT: not on the flood risk listIP20 0BW: not on the flood risk listIP20 0BX: not on the flood risk listIP20 0BY: not on the flood risk listIP20 0BZ: not on the flood risk listIP20 0DA: not on the flood risk listIP20 0DB: not on the flood risk listIP20 0DF: not on the flood risk listIP20 0DG: not on the flood risk listIP20 0DH: not on the flood risk listIP20 0DL: not on the flood risk listIP20 0DN: not on the flood risk listIP20 0DP: not on the flood risk listIP20 0DR: not on the flood risk listIP20 0DS: not on the flood risk listIP20 0DT: not on the flood risk listIP20 0EG: not on the flood risk listIP20 0EU: not on the flood risk listIP20 0HA: not on the flood risk listIP20 0HB: not on the flood risk listIP20 0HG: not on the flood risk listIP20 0HH: not on the flood risk listIP20 0HQ: not on the flood risk listIP20 0HR: not on the flood risk listIP20 0HS: not on the flood risk listIP20 0JB: not on the flood risk listIP20 0JF: not on the flood risk listIP20 0JJ: not on the flood risk listIP20 0JL: not on the flood risk listIP20 0JQ: not on the flood risk listIP20 0JR: not on the flood risk listIP20 0JY: not on the flood risk listIP20 0JZ: not on the flood risk listIP20 0LA: not on the flood risk listIP20 0LB: not on the flood risk listIP20 0LD: not on the flood risk listIP20 0LE: not on the flood risk listIP20 0LG: not on the flood risk listIP20 0LH: not on the flood risk listIP20 0LJ: not on the flood risk listIP20 0LL: not on the flood risk listIP20 0LN: not on the flood risk listIP20 0LP: not on the flood risk listIP20 0LR: not on the flood risk listIP20 0LS: not on the flood risk listIP20 0LT: not on the flood risk listIP20 0LU: not on the flood risk listIP20 0LX: not on the flood risk listIP20 0NJ: not on the flood risk listIP20 0NP: not on the flood risk listIP20 0NR: not on the flood risk listIP20 0NS: not on the flood risk listIP20 0NT: not on the flood risk listIP20 0NU: not on the flood risk listIP20 0NX: not on the flood risk listIP20 0NY: not on the flood risk listIP20 0NZ: not on the flood risk listIP20 0PA: not on the flood risk listIP20 0PD: not on the flood risk listIP20 0PE: not on the flood risk listIP20 0PF: not on the flood risk listIP20 0PG: not on the flood risk listIP20 0PH: not on the flood risk listIP20 0PJ: not on the flood risk listIP20 0PL: not on the flood risk listIP20 0PN: not on the flood risk listIP20 0PQ: not on the flood risk listIP20 0PR: not on the flood risk listIP20 0PS: not on the flood risk listIP20 0PX: not on the flood risk listIP20 0PY: not on the flood risk listIP20 0PZ: not on the flood risk listIP20 0WD: not on the flood risk listIP20 9AB: not on the flood risk listIP20 9AD: not on the flood risk listIP20 9AJ: not on the flood risk listIP20 9AP: not on the flood risk listIP20 9AR: not on the flood risk listIP20 9AS: not on the flood risk listIP20 9AY: not on the flood risk listIP20 9AZ: not on the flood risk listIP20 9BE: not on the flood risk listIP20 9BH: not on the flood risk listIP20 9BJ: not on the flood risk listIP20 9BN: not on the flood risk listIP20 9BP: not on the flood risk listIP20 9BQ: not on the flood risk listIP20 9BS: not on the flood risk listIP20 9BU: not on the flood risk listIP20 9BW: not on the flood risk listIP20 9BY: not on the flood risk listIP20 9DA: not on the flood risk listIP20 9DB: not on the flood risk listIP20 9DD: not on the flood risk listIP20 9DE: not on the flood risk listIP20 9DF: not on the flood risk listIP20 9DG: not on the flood risk listIP20 9DH: not on the flood risk listIP20 9DJ: not on the flood risk listIP20 9DN: not on the flood risk listIP20 9DQ: not on the flood risk listIP20 9DR: not on the flood risk listIP20 9DS: not on the flood risk listIP20 9DT: not on the flood risk listIP20 9DU: not on the flood risk listIP20 9DW: not on the flood risk listIP20 9DY: not on the flood risk listIP20 9DZ: not on the flood risk listIP20 9EA: not on the flood risk listIP20 9EB: not on the flood risk listIP20 9EE: not on the flood risk listIP20 9EF: not on the flood risk listIP20 9EH: not on the flood risk listIP20 9EJ: not on the flood risk listIP20 9EL: not on the flood risk listIP20 9EN: not on the flood risk listIP20 9EP: not on the flood risk listIP20 9EQ: not on the flood risk listIP20 9ES: not on the flood risk listIP20 9ET: not on the flood risk listIP20 9EW: not on the flood risk listIP20 9EX: not on the flood risk listIP20 9EY: not on the flood risk listIP20 9EZ: not on the flood risk listIP20 9FA: not on the flood risk listIP20 9FB: not on the flood risk listIP20 9FD: not on the flood risk listIP20 9FE: not on the flood risk listIP20 9FG: not on the flood risk listIP20 9FH: not on the flood risk listIP20 9FL: not on the flood risk listIP20 9FN: not on the flood risk listIP20 9FP: not on the flood risk listIP20 9FR: not on the flood risk listIP20 9FT: not on the flood risk listIP20 9FU: not on the flood risk listIP20 9GA: not on the flood risk listIP20 9GD: not on the flood risk listIP20 9GE: not on the flood risk listIP20 9GN: not on the flood risk listIP20 9GW: not on the flood risk listIP20 9HB: not on the flood risk listIP20 9HD: not on the flood risk listIP20 9HG: not on the flood risk listIP20 9HH: not on the flood risk listIP20 9HJ: not on the flood risk listIP20 9HP: not on the flood risk listIP20 9HQ: not on the flood risk listIP20 9HR: not on the flood risk listIP20 9HS: not on the flood risk listIP20 9HT: not on the flood risk listIP20 9HU: not on the flood risk listIP20 9HW: not on the flood risk listIP20 9HX: not on the flood risk listIP20 9HY: not on the flood risk listIP20 9HZ: not on the flood risk listIP20 9JG: not on the flood risk listIP20 9JH: not on the flood risk listIP20 9JJ: not on the flood risk listIP20 9JL: not on the flood risk listIP20 9JN: not on the flood risk listIP20 9JP: not on the flood risk listIP20 9JR: not on the flood risk listIP20 9JT: not on the flood risk listIP20 9JU: not on the flood risk listIP20 9JY: not on the flood risk listIP20 9LA: not on the flood risk listIP20 9LF: not on the flood risk listIP20 9LH: not on the flood risk listIP20 9LJ: not on the flood risk listIP20 9LL: not on the flood risk listIP20 9LN: not on the flood risk listIP20 9LP: not on the flood risk listIP20 9LQ: not on the flood risk listIP20 9LT: not on the flood risk listIP20 9LW: not on the flood risk listIP20 9ND: not on the flood risk listIP20 9NE: not on the flood risk listIP20 9NF: not on the flood risk listIP20 9NH: not on the flood risk listIP20 9NP: not on the flood risk listIP20 9NQ: not on the flood risk listIP20 9NR: not on the flood risk listIP20 9NT: not on the flood risk listIP20 9NW: not on the flood risk listIP20 9NY: not on the flood risk listIP20 9NZ: not on the flood risk listIP20 9PB: not on the flood risk listIP20 9PD: not on the flood risk listIP20 9PE: not on the flood risk listIP20 9PF: not on the flood risk listIP20 9PG: not on the flood risk listIP20 9PH: not on the flood risk listIP20 9PJ: not on the flood risk listIP20 9PL: not on the flood risk listIP20 9PN: not on the flood risk listIP20 9PP: not on the flood risk listIP20 9PQ: not on the flood risk listIP20 9PR: not on the flood risk listIP20 9PS: not on the flood risk listIP20 9PT: not on the flood risk listIP20 9PU: not on the flood risk listIP20 9PW: not on the flood risk listIP20 9PX: not on the flood risk listIP20 9PY: not on the flood risk listIP20 9PZ: not on the flood risk listIP20 9QA: not on the flood risk listIP20 9QB: not on the flood risk listIP20 9QD: not on the flood risk listIP20 9QE: not on the flood risk listIP20 9QG: not on the flood risk listIP20 9QH: not on the flood risk listIP20 9QJ: not on the flood risk listIP20 9QQ: not on the flood risk listIP20 9QS: not on the flood risk listIP20 0AT: low flood risk at worstIP20 0EF: low flood risk at worstIP20 0EL: low flood risk at worstIP20 0EX: low flood risk at worstIP20 0NH: low flood risk at worstIP20 0NL: low flood risk at worstIP20 0PB: low flood risk at worstIP20 9QP: low flood risk at worstIP20 9QU: low flood risk at worstIP20 0JX: medium flood risk at worstIP20 9HL: medium flood risk at worstIP20 0AE: high flood riskIP20 0EJ: high flood riskIP20 0EN: high flood riskIP20 0EP: high flood riskIP20 0ET: high flood riskIP20 0HJ: high flood riskIP20 0HP: high flood riskIP20 0JE: high flood riskIP20 0JG: high flood riskIP20 0JH: high flood riskIP20 0JP: high flood riskIP20 0NN: high flood riskIP20 9HE: high flood riskIP20 9LB: high flood riskIP20 9LD: high flood riskIP20 9LE: high flood riskIP20 9LG: high flood riskIP20 9NJ: high flood riskIP20 9NL: high flood riskIP20 9NN: high flood riskIP20 9NU: high flood riskIP20 9QN: high flood riskIP20 9QR: high flood riskIP20 9QT: high flood riskIP20 9QW: high flood risk Harleston Map of every postcode in IP20, by flood risk Of the 323 postcodes in IP20 that ONS places, 25 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 287 are not on the Environment Agency's at-risk list. Places named: Harleston. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Harleston
  • A home or business at high risk: 25
  • At medium risk at worst: 2
  • At low risk at worst: 9
  • At very low risk only: 0
  • Not on the at-risk list: 287

Of the 323 postcodes in IP20 that ONS places, 25 have a home or business at high risk, 2 are at medium risk at worst, 9 are at low risk at worst and 287 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 52.4062, longitude 1.3190. 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

25 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.

IP20 9QW9 at high riskIP20 9QN6 at high riskIP20 0AE5 at high riskIP20 0HJ4 at high riskIP20 9LE4 at high riskIP20 9LB3 at high riskIP20 9NL3 at high riskIP20 0EJ2 at high riskIP20 0ET2 at high riskIP20 0JE2 at high riskIP20 0JH2 at high riskIP20 9HE1 at high risk

What broadband can you get in IP20?

Ofcom reports on 317 of the 323 postcodes in IP20. At 116 of them every home and business can get gigabit broadband, and at 14 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit116 of 317
Postcodes where every home can get superfast247 of 317
Postcodes where some cannot get decent broadband14 of 317

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 IP20 at risk of flooding?

36 of the 323 postcodes in IP20 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 69 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 36 of 323 postcodes High: 56Medium: 13Low: 90

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 IP20?

Homes in IP20 sold for a typical £275,000 in the 12 months to August 2026, across 114 sales, up 1.9% on the 12 months before, HM Land Registry's figures show.

£275,000 typical price, the 12 months to August 2026
£270,000 12 months to August 2025
▲ up 1.9% on the 12 months before
  • Detached £342,500 50 sales
  • Semi-detached £252,500 36 sales
  • Terraced £190,000 19 sales
  • Flat or maisonette £135,000 9 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 IP20

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

IP20 0125 postcodesIP20 9198 postcodes
UK postcode format explained

Places in IP20

Towns and villages with postcodes in IP20, and how many each has here.

Harleston postcodes,134

Who covers IP20

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

  • Waveney Valley323

Police force areas

  • Norfolk258
  • Suffolk65

Next to IP20

IP19 postcode district IP21 postcode district All IP districts Harleston postcodes

"Next to" is by number: the districts before and after IP20 in the IP area.

Check a postcode

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