IP4 postcode district: Ipswich and around, Suffolk

IP4 is a postcode district in Suffolk, with 946 postcodes in use in 5 sectors. It has postcodes in Ipswich and Kesgrave. It is split between 2 councils: Ipswich (863 postcodes) and East Suffolk (83).

Postcodes in use: 946
Sectors: 5
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 IP4, by gigabit broadband

No home or business can get gigabit: 33
Some can get gigabit: 83
Every home and business can get gigabit: 816
Ofcom gives no figure: 14
Outline: where 5 or more postcodes without gigabit lie together

Of the 946 postcodes in IP4 that ONS places, 33 have no home or business that can get gigabit, 83 have some that can, 816 can all get it and 14 have no Ofcom figure.

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 150 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 52.0604, longitude 1.1802. 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; gigabit: Ofcom, Connected Nations, Spring 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

Postcodes without gigabit

33 postcodes here have no gigabit. These are the 12 first in postcode order.

IP4 1AE IP4 1AG IP4 1BE IP4 1BP IP4 1BU IP4 1BW IP4 1BX IP4 1DQ IP4 1DR IP4 1DX IP4 1EB IP4 1EN

Where the postcodes without gigabit lie together

19 postcodes without gigabit, outlined on the map. IP4 1BW, is the one nearest the middle of them.

What broadband can you get in IP4?

Ofcom reports on 932 of the 946 postcodes in IP4. At 816 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit816 of 932

Postcodes where every home can get superfast903 of 932

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 IP4 at risk of flooding?

35 of the 946 postcodes in IP4 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 4 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 35 of 946 postcodes High: 4Very low: 900

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 IP4?

Homes in IP4 sold for a typical £270,000 in the 12 months to August 2026, across 389 sales, up 0.9% on the 12 months before, HM Land Registry's figures show.

£270,000 typical price, the 12 months to August 2026

£267,500 12 months to August 2025

▲ up 0.9% on the 12 months before

Detached £438,500 80 sales
Semi-detached £292,000 148 sales
Terraced £205,000 123 sales
Flat or maisonette £139,000 38 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