# TS21

Postcode district covering Sedgefield and Fishburn, in County Durham and Stockton-on-Tees.

TS21 is a postcode district covering Sedgefield and Fishburn, in County Durham and Stockton-on-Tees. Median sale price £198,973 in 2025.

Postcode district. Code TS21. In: [Postcodes](https://openindex.co.uk/postcode) › [TS](https://openindex.co.uk/postcode/ts)

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 TS21 postcode. [How census figures are added up](https://openindex.co.uk/sources/population)

## Key figures

- **Median sale price: £198,973** (2025). The median price paid for a home in TS21 was £198,973 in 2025. 364th 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/ts21#f-house-sales-median-price
- **Population: 14,006** (2021). TS21 had 14,006 usual residents at the census (ONS Census 2021). 951st 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/ts21#f-population
- **People in radon Affected Area squares: 28%** (2022). About 28% of people in TS21 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/ts21#f-radon-affected-share
- **Gigabit broadband coverage: 59.1%** (January 2026). In TS21, 59.1% 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/ts21#f-gigabit-coverage

## On the map

- [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=TS21) (Worked out by Open Index · 2022): About 28% of people in TS21 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=TS21) (Worked out by Open Index · 2025): 330 homes were sold in TS21 in 2025.
- [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=TS21) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for TS21.
- [Population by postcode district](https://openindex.co.uk/map/population?place=TS21) (Census 2021, England and Wales): TS21 had 14,006 usual residents at the census.

## How TS21 compares

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

| Measure | TS21 | Rank | Compared with |
| --- | --- | --- | --- |
| Median sale price | £198,973 | 6th most expensive | 28 postcode districts, TS · 2025 |
| Population | 14,006 | 10th least populated | 29 postcode districts, TS · 2021 |
| People in radon Affected Area squares | 28% | 9th most people in radon Affected Areas | 29 postcode districts, TS · 2022 |
| Gigabit broadband coverage | 59.1% | 2nd lowest | 29 postcode districts, TS · Jan 2026 |

## Is TS21 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in TS21 at a rate of 74.0 per 1,000 people.
That compares with 151.5 per 1,000 people across the TS postcode area.
In August 2026 alone, 104 cases of crime and anti-social behaviour were recorded in TS21.
In the 12 months to August 2026, the most common types were violence and sexual offences (367), anti-social behaviour (220) and other crime (205).
A year earlier, the recorded crime rate in TS21 was 60.2 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 TS21, neighbourhood by neighbourhood

- Deprivation is ranked by neighbourhood, so TS21 has no single figure. Of its 8 neighbourhoods with a rank:
- Decile 2: 1 neighbourhood
- Decile 3: 2 neighbourhoods
- Decile 7: 3 neighbourhoods
- Decile 8: 1 neighbourhood
- Decile 10 (England’s least deprived 10%): 1 neighbourhood

Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England.

## Neighbourhoods in TS21

| Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband |
| --- | --- | --- | --- | --- |
| [County Durham 048B](https://openindex.co.uk/county-durham/neighbourhood/e01020810) | 1,182 | 94.7 per 1,000 | 3 | 88.8% |
| [County Durham 048C](https://openindex.co.uk/county-durham/neighbourhood/e01020811) | 1,204 | 82.8 per 1,000 | 2 | 96.1% |
| [County Durham 054B](https://openindex.co.uk/county-durham/neighbourhood/e01020828) | 1,611 | 71.0 per 1,000 | 8 | 61.0% |
| [County Durham 054C](https://openindex.co.uk/county-durham/neighbourhood/e01020829) | 2,303 | 54.4 per 1,000 | 10 | 81.6% |
| [County Durham 054D](https://openindex.co.uk/county-durham/neighbourhood/e01020830) | 1,856 | 71.4 per 1,000 | 7 | 84.2% |
| [Stockton-on-Tees 005B](https://openindex.co.uk/stockton-on-tees/neighbourhood/e01012269) | 1,605 | 49.2 per 1,000 | 7 | 20.1% |
| [Stockton-on-Tees 005D](https://openindex.co.uk/stockton-on-tees/neighbourhood/e01012294) | 1,332 | 58.3 per 1,000 | 7 | 1.7% |
| [Stockton-on-Tees 005E](https://openindex.co.uk/stockton-on-tees/neighbourhood/e01012295) | 1,407 | 68.5 per 1,000 | 3 | 14.7% |

## Your MP

- [Newton Aycliffe and Spennymoor](https://openindex.co.uk/constituency/newton-aycliffe-and-spennymoor): Alan Strickland (Labour), MP since July 2024. 56% of the people here.
- [Stockton West](https://openindex.co.uk/constituency/stockton-west): Matt Vickers (Conservative), MP since July 2024. 35% of the people here.
- [Stockton North](https://openindex.co.uk/constituency/stockton-north): Chris McDonald (Labour), MP since July 2024. 9.0% 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 TS21

[Billingham West, Stillington & Longnewton](https://openindex.co.uk/stockton-on-tees/billingham-west-stillington-and-longnewton), [Sedgefield & Bishop Middleham](https://openindex.co.uk/county-durham/sedgefield-and-bishop-middleham)

## Postcode sectors in TS21

[TS21 1 (203 postcodes)](https://openindex.co.uk/postcode/ts21-1), [TS21 2 (110 postcodes)](https://openindex.co.uk/postcode/ts21-2), [TS21 3 (150 postcodes)](https://openindex.co.uk/postcode/ts21-3), [TS21 4 (82 postcodes)](https://openindex.co.uk/postcode/ts21-4)

## Councils TS21 covers

[County Durham](https://openindex.co.uk/county-durham), [Stockton-on-Tees](https://openindex.co.uk/stockton-on-tees)

## Postcode districts next to TS21

[DH6](https://openindex.co.uk/postcode/dh6), [DL1](https://openindex.co.uk/postcode/dl1), [DL2](https://openindex.co.uk/postcode/dl2), [DL5](https://openindex.co.uk/postcode/dl5), [DL17](https://openindex.co.uk/postcode/dl17), [TS16](https://openindex.co.uk/postcode/ts16), [TS18](https://openindex.co.uk/postcode/ts18), [TS19](https://openindex.co.uk/postcode/ts19), [TS20](https://openindex.co.uk/postcode/ts20), [TS22](https://openindex.co.uk/postcode/ts22), [TS27](https://openindex.co.uk/postcode/ts27), [TS28](https://openindex.co.uk/postcode/ts28), [TS29](https://openindex.co.uk/postcode/ts29)

## More in the TS postcode area

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

## TS21 in brief

TS21 is a postcode district covering Sedgefield and Fishburn, in County Durham and Stockton-on-Tees.
About 14,913 people lived in TS21 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £198,973 in 2025 across 330 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 74.0 per 1,000 people in the 12 months to August 2026 (police.uk).
The median price paid for a home in TS21 was £198,973 in 2025.
TS21 had 14,006 usual residents at the census.
About 28% of people in TS21 live in a 1 km square that the radon atlas marks as a radon Affected Area.
In TS21, 59.1% of homes and businesses could get gigabit-capable broadband in January 2026.

## About

- Type: Postcode district
- Code: TS21
- Postcode area: [TS](https://openindex.co.uk/postcode/ts)
- Constituency: [Newton Aycliffe and Spennymoor †](https://openindex.co.uk/constituency/newton-aycliffe-and-spennymoor)
- Council: [County Durham †](https://openindex.co.uk/county-durham)
- Area: 175 km²
- People, mid-2024: 14,913*
- Neighbourhoods: 8
- Output areas: 47

* 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, region and nation this postcode district mostly lies in. Its edges do not follow theirs.

## Next door

[TS22](https://openindex.co.uk/postcode/ts22), [DL17](https://openindex.co.uk/postcode/dl17), [DL2](https://openindex.co.uk/postcode/dl2), [DL1](https://openindex.co.uk/postcode/dl1), [TS19](https://openindex.co.uk/postcode/ts19), [DL5](https://openindex.co.uk/postcode/dl5)

## Latest updates for TS21

- 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/TS21

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/ts21, or to one figure with its anchor, https://openindex.co.uk/postcode/ts21#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/ts21