# TR12 Postcode district covering Mullion and St Keverne, in Cornwall. TR12 is a postcode district covering Mullion and St Keverne, in Cornwall. Median sale price £365,000 in 2025. Recorded crime 44.9 per 1,000 people. Postcode district. Code TR12. In: [Postcodes](https://openindex.co.uk/postcode) › [TR](https://openindex.co.uk/postcode/tr) 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 TR12 postcode. [How census figures are added up](https://openindex.co.uk/sources/population) ## Key figures - **Median sale price: £365,000** (2025). The median price paid for a home in TR12 was £365,000 in 2025. Joint 727th 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/tr12#f-house-sales-median-price - **Population: 9,526** (2021). TR12 had 9,526 usual residents at the census (ONS Census 2021). 692nd 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/tr12#f-population - **People in radon Affected Area squares: 94%** (2022). About 94% of people in TR12 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/tr12#f-radon-affected-share - **Gigabit broadband coverage: 74.8%** (January 2026). In TR12, 74.8% 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/tr12#f-gigabit-coverage ## On the map - [Radon Affected Area by postcode district](https://openindex.co.uk/map/radon-affected-areas?place=TR12) (Worked out by Open Index · 2022): About 94% of people in TR12 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=TR12) (Worked out by Open Index · 2025): 143 homes were sold in TR12 in 2025. - [Crime and ASB by postcode district](https://openindex.co.uk/map/recorded-crime?place=TR12) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for TR12. - [Population by postcode district](https://openindex.co.uk/map/population?place=TR12) (Census 2021, England and Wales): TR12 had 9,526 usual residents at the census. ## How TR12 compares Each postcode district against every other postcode district the measure covers. | Measure | TR12 | Rank | Compared with | | --- | --- | --- | --- | | Median sale price | £365,000 | 6th most expensive | 23 postcode districts, TR · 2025 | | Population | 9,526 | 10th least populated | 26 postcode districts, TR · 2021 | | People in radon Affected Area squares | 94% | fewest people in radon Affected Areas | 26 postcode districts, TR · 2022 | | Gigabit broadband coverage | 74.8% | joint 4th highest | 26 postcode districts, TR · Jan 2026 | ## Is TR12 safe? What police records show In the 12 months to August 2026, police recorded crimes and anti-social behaviour in TR12 at a rate of 44.9 per 1,000 people. That compares with 74.4 per 1,000 people across the TR postcode area. In August 2026 alone, 51 cases of crime and anti-social behaviour were recorded in TR12. In the 12 months to August 2026, the most common types were violence and sexual offences (204), other crime (88) and criminal damage and arson (68). A year earlier, the recorded crime rate in TR12 was 40.6 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 TR12, neighbourhood by neighbourhood - Deprivation is ranked by neighbourhood, so TR12 has no single figure. Of its 5 neighbourhoods with a rank: - Decile 3: 3 neighbourhoods - Decile 4: 2 neighbourhoods Source: English Indices of Deprivation 2025. Decile 1 is the most deprived tenth of neighbourhoods in England. ## Neighbourhoods in TR12 | Area | People (census) | Recorded crime per 1,000 | Deprivation decile | Gigabit broadband | | --- | --- | --- | --- | --- | | [Cornwall 073A](https://openindex.co.uk/cornwall/neighbourhood/e01018881) | 2,129 | 40.0 per 1,000 | 3 | 59.7% | | [Cornwall 073B](https://openindex.co.uk/cornwall/neighbourhood/e01018902) | 1,208 | 42.8 per 1,000 | 3 | 68.0% | | [Cornwall 073C](https://openindex.co.uk/cornwall/neighbourhood/e01018903) | 1,194 | 56.0 per 1,000 | 4 | 80.7% | | [Cornwall 073D](https://openindex.co.uk/cornwall/neighbourhood/e01018904) | 2,302 | 59.5 per 1,000 | 4 | 85.9% | | [Cornwall 073E](https://openindex.co.uk/cornwall/neighbourhood/e01018920) | 2,075 | 34.0 per 1,000 | 3 | 79.6% | ## Your MP - [St Ives](https://openindex.co.uk/constituency/st-ives): Andrew George (Liberal Democrat), MP since July 2024. 100% of the people here. - [Camborne and Redruth](https://openindex.co.uk/constituency/camborne-and-redruth): Perran Moon (Labour), MP since July 2024. 0.2% 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 TR12 [The Lizard](https://openindex.co.uk/cornwall/the-lizard) ## Postcode sectors in TR12 [TR12 6 (229 postcodes)](https://openindex.co.uk/postcode/tr12-6), [TR12 7 (206 postcodes)](https://openindex.co.uk/postcode/tr12-7) ## Council [Cornwall](https://openindex.co.uk/cornwall) ## Postcode districts next to TR12 [TR11](https://openindex.co.uk/postcode/tr11), [TR13](https://openindex.co.uk/postcode/tr13) ## More in the TR postcode area [All TR postcode districts](https://openindex.co.uk/postcode/tr), [Every UK postcode area](https://openindex.co.uk/postcode) ## TR12 in brief TR12 is a postcode district covering Mullion and St Keverne, in Cornwall. About 9,484 people lived in TR12 in mid-2024 (worked out by Open Index from ONS small-area estimates); the median price paid for a home was £365,000 in 2025 across 143 sales (HM Land Registry) and police recorded crimes and anti-social behaviour at a rate of 44.9 per 1,000 people in the 12 months to August 2026 (police.uk). The median price paid for a home in TR12 was £365,000 in 2025. TR12 had 9,526 usual residents at the census. About 94% of people in TR12 live in a 1 km square that the radon atlas marks as a radon Affected Area. In TR12, 74.8% of homes and businesses could get gigabit-capable broadband in January 2026. ## About - Type: Postcode district - Code: TR12 - Postcode area: [TR](https://openindex.co.uk/postcode/tr) - Constituency: [St Ives †](https://openindex.co.uk/constituency/st-ives) - Council: [Cornwall †](https://openindex.co.uk/cornwall) - Area: 162 km² - People, mid-2024: 9,484* - Neighbourhoods: 5 - Output areas: 32 * 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 [TR13](https://openindex.co.uk/postcode/tr13), [TR11](https://openindex.co.uk/postcode/tr11) ## Latest updates for TR12 - 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/TR12 ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/postcode/tr12, or to one figure with its anchor, https://openindex.co.uk/postcode/tr12#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/tr12