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: ONS Postcode Directory, August 2026, loaded 20 October 2026.
Every postcode in B31, by gigabit broadband
- No home or business can get gigabit: 7
- Some can get gigabit: 70
- Every home and business can get gigabit: 1,061
- Ofcom gives no figure: 26
Of the 1,164 postcodes in B31 that ONS places, 7 have no home or business that can get gigabit, 70 have some that can, 1,061 can all get it and 26 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. 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
Sources: ONS Postcode Directory, August 2026, loaded 20 October 2026; Ofcom Connected Nations, Connected Nations, Spring 2026; roads, rivers and built-up areas: Ordnance Survey open maps. 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.
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.
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 checkerSource: Ofcom Connected Nations, Connected Nations, Spring 2026, data for January 2026.
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.
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 flood risk, published 6 July 2026.
What do homes sell for in B31?
Homes in B31 sold for a typical £234,250 in the 12 months to September 2026, across 530 sales, HM Land Registry's figures show. The 12 months before gave £240,000 from 774 sales: not a change larger than chance would explain, given which homes happened to sell.
- Detached £345,000 65 sales
- Semi-detached £260,000 221 sales
- Terraced £220,000 166 sales
- Flat or maisonette £135,750 78 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 October 2026.
Postcodes in B31
Pick a sector, then a postcode. A sector is the district plus the next digit.
Places in B31
Towns and villages with postcodes in B31, and how many each has here.
Who covers B31
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
- Birmingham1,159
- Bromsgrove5
Constituencies
- Birmingham Northfield985
- Birmingham Edgbaston124
- Birmingham Selly Oak50
- Bromsgrove5
Police force areas
- West Midlands1,159
- West Mercia5
Next to B31
"Next to" is by number: the districts before and after B31 in the B area.
Check a postcode
Where the facts on this page come from
- Office for National Statistics: ONS Postcode Directory
- Ofcom Connected Nations
- Environment Agency flood risk
- HM Land Registry Price Paid Data
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0.
Licence: Open Government Licence v3.0.
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