# SY21

Postcode district covering Welshpool and Burgess Lands, in Powys.

SY21 is a postcode district covering Welshpool and Burgess Lands, in Powys. Median sale price £235,000 in 2025. Recorded crime 76.6 per 1,000 people.

Postcode district. Code SY21. In: [Postcodes](https://openindex.co.uk/postcode) › [SY](https://openindex.co.uk/postcode/sy)

Approximate outline worked out by Open Index from the ONS Postcode Directory: each census output area belongs to the district that holds most of its postcodes. People, homes, recorded crime and broadband add up those output areas. House sales count every sale with an SY21 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £235,000** (2025). The median price paid for a home in SY21 was £235,000 in 2025. Joint 636th cheapest of 2,235. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. https://openindex.co.uk/postcode/sy21#f-house-sales-median-price
- **Population: 16,996** (2021). SY21 had 16,996 usual residents at the census (ONS Census 2021). 1,114th least populated of 2,756. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/postcode/sy21#f-population
- **People in radon Affected Area squares: 100%** (2022). About 100% of people in SY21 live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022. https://openindex.co.uk/postcode/sy21#f-radon-affected-share
- **Gigabit broadband coverage: 68.8%** (January 2026). In SY21, 68.8% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/postcode/sy21#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SY21) (Worked out by Open Index · 2022): About 100% of people in SY21 live in a 1 km square that the radon atlas marks as a radon Affected Area.
- [Sales per year by postcode district](https://openindex.co.uk/map/house-sales-per-year?place=SY21) (Worked out by Open Index · 2025): 195 homes were sold in SY21 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SY21) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SY21.
- [Population by postcode district](https://openindex.co.uk/map/population?place=SY21) (Census 2021, England and Wales): SY21 had 16,996 usual residents at the census.

## How SY21 compares

Each postcode district against every other postcode district the measure covers.

| Measure | SY21 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £235,000 | 9th cheapest | 25 postcode districts, SY · 2025 |
| Population | 16,996 | 10th most populated | 25 postcode districts, SY · 2021 |
| People in radon Affected Area squares | 100% | joint most people in radon Affected Areas | 25 postcode districts, SY · 2022 |
| Gigabit broadband coverage | 68.8% | 12th lowest | 25 postcode districts, SY · Jan 2026 |

## Is SY21 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SY21 at a rate of 76.6 per 1,000 people.
That compares with 66.4 per 1,000 people across the SY postcode area.
In August 2026 alone, 109 cases of crime and anti-social behaviour were recorded in SY21.
In the 12 months to August 2026, the most common types were violence and sexual offences (571), anti-social behaviour (298) and other crime (208).
A year earlier, the recorded crime rate in SY21 was 67.8 per 1,000 people.
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

## Deprivation in SY21, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so SY21 has no single figure. Of its 10 neighbourhoods with a rank:
- Decile 2: 1 neighbourhood
- Decile 4: 2 neighbourhoods
- Decile 6: 2 neighbourhoods
- Decile 7: 3 neighbourhoods
- Decile 8: 2 neighbourhoods

Source: Welsh Index of Multiple Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in Wales.

## Neighbourhoods in SY21

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [Powys 002A](https://openindex.co.uk/powys/neighbourhood/w01000444) | 2,258 | 44.4 per 1,000 | 8 | 91.6% |
| [Powys 003A](https://openindex.co.uk/powys/neighbourhood/w01000498) | 1,488 | 200.1 per 1,000 | 2 | 89.9% |
| [Powys 003B](https://openindex.co.uk/powys/neighbourhood/w01000499) | 1,236 | 154.7 per 1,000 | 4 | 82.4% |
| [Powys 003C](https://openindex.co.uk/powys/neighbourhood/w01000500) | 1,712 | 55.2 per 1,000 | 7 | 93.8% |
| [Powys 003D](https://openindex.co.uk/powys/neighbourhood/w01000501) | 2,202 | 83.3 per 1,000 | 6 | 93.1% |
| [Powys 004B](https://openindex.co.uk/powys/neighbourhood/w01000452) | 1,994 | 27.4 per 1,000 | 4 | 73.0% |
| [Powys 005A](https://openindex.co.uk/powys/neighbourhood/w01000428) | 1,339 | 17.4 per 1,000 | 7 | 91.0% |
| [Powys 005B](https://openindex.co.uk/powys/neighbourhood/w01000441) | 1,536 | 25.9 per 1,000 | 8 | 80.6% |
| [Powys 005D](https://openindex.co.uk/powys/neighbourhood/w01000497) | 1,374 | 61.7 per 1,000 | 7 | 39.5% |
| [Powys 006B](https://openindex.co.uk/powys/neighbourhood/w01000460) | 1,706 | 140.2 per 1,000 | 6 | 8.8% |

## Your MP

- [Montgomeryshire and Glyndŵr](https://openindex.co.uk/constituency/montgomeryshire-and-glyndwr): Steve Witherden (Labour), MP since July 2024. 98% of the people here.
- [South Shropshire](https://openindex.co.uk/constituency/south-shropshire): Stuart Anderson (Conservative), MP since July 2024. 1.4% of the people here.
- [Shrewsbury](https://openindex.co.uk/constituency/shrewsbury): Julia Buckley (Labour), MP since July 2024. 0.7% of the people here.

As of 18 October 2026. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.

## Middle areas in SY21

[Montgomery, Trewern & Berriew](https://openindex.co.uk/powys/montgomery-trewern-and-berriew), [Welshpool](https://openindex.co.uk/powys/welshpool)

## Postcode sectors in SY21

[SY21 0 (200 postcodes)](https://openindex.co.uk/postcode/sy21-0), [SY21 1 (2 postcodes)](https://openindex.co.uk/postcode/sy21-1), [SY21 7 (250 postcodes)](https://openindex.co.uk/postcode/sy21-7), [SY21 8 (243 postcodes)](https://openindex.co.uk/postcode/sy21-8), [SY21 9 (177 postcodes)](https://openindex.co.uk/postcode/sy21-9)

## Council

[Powys](https://openindex.co.uk/powys)

## Postcode districts next to SY21

[SY5](https://openindex.co.uk/postcode/sy5), [SY10](https://openindex.co.uk/postcode/sy10), [SY15](https://openindex.co.uk/postcode/sy15), [SY16](https://openindex.co.uk/postcode/sy16), [SY17](https://openindex.co.uk/postcode/sy17), [SY19](https://openindex.co.uk/postcode/sy19), [SY20](https://openindex.co.uk/postcode/sy20), [SY22](https://openindex.co.uk/postcode/sy22)

## Nearest rail stations

[Welshpool (2.6 km from the middle)](https://openindex.co.uk/map/rail-stations?around=-3.1399,52.6575)

## More in the SY postcode area

[All SY postcode districts](https://openindex.co.uk/postcode/sy), [Every UK postcode area](https://openindex.co.uk/postcode)

## SY21 in brief

SY21 is a postcode district covering Welshpool and Burgess Lands, in Powys.
About 17,348 people lived in SY21 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £235,000 in 2025 across 195 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 76.6 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in SY21 was £235,000 in 2025.
SY21 had 16,996 usual residents at the census.
About 100% of people in SY21 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In SY21, 68.8% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: SY21
- Postcode area: [SY](https://openindex.co.uk/postcode/sy)
- Constituency: [Montgomeryshire and Glyndwr †](https://openindex.co.uk/constituency/montgomeryshire-and-glyndwr)
- Council: [Powys †](https://openindex.co.uk/powys)
- Area: 505 km²
- People, mid-2024: 17,348*
- Neighbourhoods: 10
- Output areas: 55

* People: worked out by Open Index from neighbourhood estimates, shared out by where people lived at the census (by area in Northern Ireland). This area's edges do not follow neighbourhood edges, so the figure is close but not exact.
† Best fit: the constituency, council and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[SY22](https://openindex.co.uk/postcode/sy22), [SY15](https://openindex.co.uk/postcode/sy15), [SY16](https://openindex.co.uk/postcode/sy16), [SY5](https://openindex.co.uk/postcode/sy5), [SY10](https://openindex.co.uk/postcode/sy10), [SY19](https://openindex.co.uk/postcode/sy19)

## Latest updates for SY21

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Dental practices updated: NHS England · Oct 2026.
- Schools updated: Ofsted · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/SY21

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/sy21, or to one figure with its anchor, https://openindex.co.uk/postcode/sy21#f-house-sales-median-price.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.9. The HTML page: https://openindex.co.uk/postcode/sy21