# St Mary's East Isles of Scilly. About 1,834 people (mid-2024 estimate) in 6.6 square kilometres. St Mary's had 1,593 usual residents at the census (ONS Census 2021). Ward. Code E05011093. In: [South West](https://openindex.co.uk/south-west) › [Isles of Scilly](https://openindex.co.uk/isles-of-scilly) ## Key figures - **Population: 1,593** (2021). St Mary's had 1,593 usual residents at the census (ONS Census 2021). 86th least populated of 8,397. 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/isles-of-scilly/ward/st-marys#f-population - **People in radon Affected Area squares: 100%** (2022). About 100% of people in St Mary's 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/isles-of-scilly/ward/st-marys#f-radon-affected-share - **Gigabit broadband coverage: 58.7%** (January 2026). In St Mary's, 58.7% 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/isles-of-scilly/ward/st-marys#f-gigabit-coverage - **Claimant rate: 1.4%** (August 2026). In St Mary's, 1.4% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026 (ONS via Nomis). UK 3.9%. Source: Claimant count (Nomis), August 2026. Published 15 September 2026. https://openindex.co.uk/isles-of-scilly/ward/st-marys#f-claimant-rate ## On the map - [Radon Affected Area by ward](https://openindex.co.uk/map/radon-affected-areas#place=E05011093) (Worked out by Open Index · 2022): About 100% of people in St Mary's live in a 1 km square that the radon atlas marks as a radon Affected Area. - [Average house price by council](https://openindex.co.uk/map/house-prices#place=E05011093) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Isles of Scilly. The outline is St Mary's. - [Crime and ASB by ward](https://openindex.co.uk/map/recorded-crime#place=E05011093) (Police recorded crime and outcomes (data.police.uk) · August 2026): Crime and anti-social behaviour for St Mary's. - [Population by ward](https://openindex.co.uk/map/population#place=E05011093) (Census 2021, England and Wales): St Mary's had 1,593 usual residents at the census. ## How St Mary's compares Each ward against every other ward the measure covers. | Measure | St Mary's | Rank | Compared with | | --- | --- | --- | --- | | Population | 1,593 | most populated | 4 wards, Isles of Scilly · 2021 | | People in radon Affected Area squares | 100% | – | 4 wards, Isles of Scilly · 2022 | | Gigabit broadband coverage | 58.7% | highest | 4 wards, Isles of Scilly · Jan 2026 | ## Is St Mary's safe? What police records show In the 12 months to August 2026, police recorded crimes and anti-social behaviour in St Mary's at a rate of 39.3 per 1,000 people. That compares with 40.5 per 1,000 people across Isles of Scilly. Across England as a whole, the recorded crime rate was 96.3 per 1,000 people. In August 2026 alone, 19 cases of crime and anti-social behaviour were recorded in St Mary's. In the 12 months to August 2026, the most common types were violence and sexual offences (49), other crime (22) and burglary (6). 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. ## Figures for the whole of Isles of Scilly These figures are published for the whole of Isles of Scilly, not for each ward, so they describe all of Isles of Scilly and not St Mary's alone. [See Isles of Scilly](https://openindex.co.uk/isles-of-scilly) - **Deprivation score: 12.7** (2025). Isles of Scilly has a deprivation score of 12.7 in the English Indices of Deprivation 2025 (MHCLG). Joint 57th least deprived of 296. Source: English Indices of Deprivation 2025, 2025. Published 30 October 2025. - **Population estimate: 2,299** (2025). Isles of Scilly’s population was an estimated 2,299 in mid-2025 (ONS population estimates). Down 3.5% in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026. - **Median sale price: £545,000** (2025). The median price paid for a home in Isles of Scilly was £545,000 in 2025. Joint 23rd most expensive of 318. Source: Worked out by Open Index from HM Land Registry Price Paid Data. Published 28 September 2026. - **Full-fibre broadband coverage: 50.2%** (January 2026). In Isles of Scilly, 50.2% of homes and businesses could get full-fibre broadband in January 2026 (Ofcom). UK 81.0%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. ## St Mary's in brief St Mary's had 1,593 usual residents at the census. About 100% of people in St Mary's live in a 1 km square that the radon atlas marks as a radon Affected Area. In St Mary's, 58.7% of homes and businesses could get gigabit-capable broadband in January 2026. In St Mary's, 1.4% of residents aged 16 to 64 were claiming out-of-work benefits in August 2026. ## About - Type: Ward - Code: E05011093 - Constituency: [St Ives †](https://openindex.co.uk/constituency/st-ives) - Council: [Isles of Scilly](https://openindex.co.uk/isles-of-scilly) - Region: [South West](https://openindex.co.uk/south-west) - Nation: [England](https://openindex.co.uk/england) - Area: 6.55 km² - People, mid-2024: 1,834* - Neighbourhoods: 1 - Output areas: 6 * 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 this ward mostly lies in. Its edges do not follow it. ## Next door [St Agnes](https://openindex.co.uk/isles-of-scilly/ward/st-agnes), [Tresco](https://openindex.co.uk/isles-of-scilly/ward/tresco), [St Martin's](https://openindex.co.uk/isles-of-scilly/ward/st-martins), [Bryher](https://openindex.co.uk/isles-of-scilly/ward/bryher) ## Latest updates for St Mary's - 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/E05011093 ## How to cite Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/isles-of-scilly/ward/st-marys, or to one figure with its anchor, https://openindex.co.uk/isles-of-scilly/ward/st-marys#f-population. 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 2026.10.11. The HTML page: https://openindex.co.uk/isles-of-scilly/ward/st-marys