SY21 postcode district: Welshpool and around
SY21 is a postcode district mostly in Wales, with 872 postcodes in use in 5 sectors. It has postcodes in Welshpool. It is split between 2 councils: Powys (854 postcodes) and Shropshire (18). It crosses a national border: 854 are in Wales and 18 in England.
- Postcodes in use
- 872
- Sectors
- 5
- Councils
- 2 councils
- Places
- Welshpool
Source: ONS Postcode Directory, August 2026, loaded 20 October 2026.
Every postcode in SY21, by gigabit broadband
- No home or business can get gigabit: 240
- Some can get gigabit: 185
- Every home and business can get gigabit: 432
- Ofcom gives no figure: 15
- Outline: where 5 or more postcodes without gigabit lie together
Of the 872 postcodes in SY21 that ONS places, 240 have no home or business that can get gigabit, 185 have some that can, 432 can all get it and 15 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 280 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 52.6582, longitude -3.2067. 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.
Postcodes without gigabit
240 postcodes here have no gigabit. These are the 12 first in postcode order.
Where the postcodes without gigabit lie together
- 37 postcodes without gigabit, outlined on the map. SY21 0QZ, is the one nearest the middle of them.
- 9 postcodes without gigabit, outlined on the map. SY21 7AF, is the one nearest the middle of them.
- 9 postcodes without gigabit, outlined on the map. SY21 8EX, is the one nearest the middle of them.
- 5 postcodes without gigabit, outlined on the map. SY21 8JR, is the one nearest the middle of them.
What broadband can you get in SY21?
Ofcom reports on 857 of the 872 postcodes in SY21. At 432 of them every home and business can get gigabit broadband, and at 87 some cannot get decent broadband (10 Mbit/s).
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 SY21 at risk of flooding?
5 of the 18 postcodes in SY21 that are in England 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 62 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 SY21?
Homes in SY21 sold for a typical £250,000 in the 12 months to September 2026, across 144 sales, HM Land Registry's figures show. The 12 months before gave £230,250 from 185 sales: not a change larger than chance would explain, given which homes happened to sell.
- Detached £299,950 79 sales
- Semi-detached £203,000 39 sales
- Terraced £168,750 26 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 SY21
Pick a sector, then a postcode. A sector is the district plus the next digit.
UK postcode format explainedPlaces in SY21
Towns and villages with postcodes in SY21, and how many each has here.
Who covers SY21
How many of the district's postcodes in use fall under each council, constituency and police force area.
Councils
- Powys854
- Shropshire18
Constituencies
- Montgomeryshire and Glyndwr854
- South Shropshire12
- Shrewsbury6
Police force areas
- Dyfed-Powys854
- West Mercia18
Next to SY21
"Next to" is by number: the districts before and after SY21 in the SY 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.
Something wrong on this page? Report an error and we will check it against the source. All our sources