# SO20 Postcode district covering King's Somborne, Broughton and Kentsboro, in Test Valley. SO20 is a postcode district covering King's Somborne, Broughton and Kentsboro, in Test Valley. Median sale price £597,500 in 2025. Postcode district. Code SO20. In: [Postcodes](https://openindex.co.uk/postcode) › [SO](https://openindex.co.uk/postcode/so) 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 SO20 postcode. [How census figures are added up](https://openindex.co.uk/sources/population) ## Key figures - **Median sale price: £597,500** (2025). The median price paid for a home in SO20 was £597,500 in 2025. 152nd most expensive 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/so20#f-house-sales-median-price - **Population: 7,976** (2021). SO20 had 7,976 usual residents at the census (ONS Census 2021). 615th 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/so20#f-population - **People in radon Affected Area squares: 35%** (2022). About 35% of people in SO20 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/so20#f-radon-affected-share - **Gigabit broadband coverage: 59.9%** (January 2026). In SO20, 59.9% 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/so20#f-gigabit-coverage ## On the map - [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=SO20) (Worked out by Open Index · 2022): About 35% of people in SO20 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=SO20) (Worked out by Open Index · 2025): 104 homes were sold in SO20 in 2025. - [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=SO20) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for SO20. - [Population by postcode district](https://openindex.co.uk/map/population?place=SO20) (Census 2021, England and Wales): SO20 had 7,976 usual residents at the census. ## How SO20 compares Each postcode district against every other postcode district the measure covers. | Measure | SO20 | Rank | Compared with | | --- | --- | --- | --- | | Median sale price | £597,500 | 2nd most expensive | 23 postcode districts, SO · 2025 | | Population | 7,976 | 5th least populated | 24 postcode districts, SO · 2021 | | People in radon Affected Area squares | 35% | 12th most people in radon Affected Areas | 24 postcode districts, SO · 2022 | | Gigabit broadband coverage | 59.9% | 3rd lowest | 24 postcode districts, SO · Jan 2026 | ## Is SO20 safe? What police records show In the 12 months to August 2026, police recorded crimes and anti-social behaviour in SO20 at a rate of 43.1 per 1,000 people. That compares with 86.0 per 1,000 people across the SO postcode area. In August 2026 alone, 24 cases of crime and anti-social behaviour were recorded in SO20. In the 12 months to August 2026, the most common types were violence and sexual offences (102), other crime (99) and vehicle crime (42). A year earlier, the recorded crime rate in SO20 was 44.6 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 SO20, neighbourhood by neighbourhood - Deprivation is ranked by neighbourhood, so SO20 has no single figure. Of its 5 neighbourhoods with a rank: - Decile 6: 3 neighbourhoods - Decile 7: 1 neighbourhood - Decile 8: 1 neighbourhood Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England. ## Neighbourhoods in SO20 | Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband | | --- | --- | --- | --- | --- | | [Test Valley 007B](https://openindex.co.uk/test-valley/neighbourhood/e01023195) | 2,065 | 35.8 per 1,000 | 8 | 38.3% | | [Test Valley 008B](https://openindex.co.uk/test-valley/neighbourhood/e01023168) | 1,427 | 42.3 per 1,000 | 7 | 67.5% | | [Test Valley 009A](https://openindex.co.uk/test-valley/neighbourhood/e01023166) | 1,583 | 39.4 per 1,000 | 6 | 73.8% | | [Test Valley 009B](https://openindex.co.uk/test-valley/neighbourhood/e01023167) | 1,556 | 61.5 per 1,000 | 6 | 46.7% | | [Test Valley 009E](https://openindex.co.uk/test-valley/neighbourhood/e01023185) | 1,207 | 44.2 per 1,000 | 6 | 89.1% | ## Your MP - [Romsey and Southampton North](https://openindex.co.uk/constituency/romsey-and-southampton-north): Caroline Nokes (Conservative), MP since July 2024. 99% of the people here. - [Winchester](https://openindex.co.uk/constituency/winchester): Dr Danny Chambers (Liberal Democrat), MP since July 2024. 1.2% 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 SO20 [Nether Wallop, Kings Somborne & Dunbridge](https://openindex.co.uk/test-valley/nether-wallop-kings-somborne-and-dunbridge) ## Postcode sectors in SO20 [SO20 6 (198 postcodes)](https://openindex.co.uk/postcode/so20-6), [SO20 8 (148 postcodes)](https://openindex.co.uk/postcode/so20-8) ## Council [Test Valley](https://openindex.co.uk/test-valley) ## Postcode districts next to SO20 [SO21](https://openindex.co.uk/postcode/so21), [SO51](https://openindex.co.uk/postcode/so51), [SP4](https://openindex.co.uk/postcode/sp4), [SP5](https://openindex.co.uk/postcode/sp5), [SP11](https://openindex.co.uk/postcode/sp11) ## More in the SO postcode area [All SO postcode districts](https://openindex.co.uk/postcode/so), [Every UK postcode area](https://openindex.co.uk/postcode) ## SO20 in brief SO20 is a postcode district covering King's Somborne, Broughton and Kentsboro, in Test Valley. About 8,092 people lived in SO20 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £597,500 in 2025 across 104 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 43.1 per 1,000 people in the 12 months to August 2026 (police.uk). The median price paid for a home in SO20 was £597,500 in 2025. SO20 had 7,976 usual residents at the census. About 35% of people in SO20 live in a 1 km square that the radon atlas marks as a radon Affected Area. In SO20, 59.9% of homes and businesses could get gigabit-capable broadband in January 2026. ## About - Type: Postcode district - Code: SO20 - Postcode area: [SO](https://openindex.co.uk/postcode/so) - Constituency: [Romsey and Southampton North †](https://openindex.co.uk/constituency/romsey-and-southampton-north) - Council: [Test Valley †](https://openindex.co.uk/test-valley) - Area: 148 km² - People, mid-2024: 8,092* - Neighbourhoods: 5 - Output areas: 27 * 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 [SP11](https://openindex.co.uk/postcode/sp11), [SO21](https://openindex.co.uk/postcode/so21), [SP5](https://openindex.co.uk/postcode/sp5), [SO51](https://openindex.co.uk/postcode/so51), [SP4](https://openindex.co.uk/postcode/sp4) ## Latest updates for SO20 - 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/SO20 ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/so20, or to one figure with its anchor, https://openindex.co.uk/postcode/so20#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/so20