B31 postcode district: Birmingham and around

B31 is a postcode district in England, with 1,164 postcodes in use in 6 sectors. It has postcodes in Birmingham. It is split between 2 councils: Birmingham (1,159 postcodes) and Bromsgrove (5). 5 of its 1,164 postcodes are in Worcestershire. ONS lists no county for the other 1,159.

Postcodes in use: 1,164
Sectors: 6
Councils: 2 councils
Places: Birmingham

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

Every postcode in B31, and which are new since 2020

New since 2020: 48
In use before 2020: 1,116
Outline: where 5 or more new postcodes since 2020 lie together

Of the 1,164 postcodes in B31 that ONS places, 48 are new since 2020 and 1,116 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. 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. Names in italics are council wards: we hold no town or village names here.

The middle of its postcodes: latitude 52.4080, longitude -1.9739. 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; when each came into use: the same directory; 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 5 newest postcodes

B31 5GYMay 2026 B31 9EZMay 2026 B31 5GZApril 2026 B31 5FUJanuary 2026 B31 5GXDecember 2025

Where the new postcodes lie together

24 new postcodes since 2020, outlined on the map. B31 5GY, is the newest of them.
9 new postcodes since 2020, outlined on the map. B31 9EZ, is the newest of them.
8 new postcodes since 2020, outlined on the map. B31 2XF, is the newest of them.

What broadband can you get in B31?

Ofcom reports on 1,138 of the 1,164 postcodes in B31. At 1,061 of them every home and business can get gigabit broadband.

Postcodes where every home can get gigabit1,061 of 1,138

Postcodes where every home can get superfast1,093 of 1,138

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 B31 at risk of flooding?

29 of the 1,164 postcodes in B31 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 211 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 29 of 1,164 postcodes High: 129Medium: 82Low: 121Very low: 6

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 B31?

Homes in B31 sold for a typical £234,250 in the 12 months to August 2026, across 534 sales, down 1.8% on the 12 months before, HM Land Registry's figures show.

£234,250 typical price, the 12 months to August 2026

£238,500 12 months to August 2025

▼ down 1.8% on the 12 months before

Detached £342,500 61 sales
Semi-detached £255,000 226 sales
Terraced £221,000 167 sales
Flat or maisonette £135,750 80 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