St Mary's
St Mary's is one of 19 wards in Windsor and Maidenhead, home to 7,130 people in 3,271 households (Census 2021). Homes sold for a median of £385,000 over the past two years, 28% below the Windsor and Maidenhead median. On average 11% of the land within 500 metres of a home postcode is green space — 47% below the Windsor and Maidenhead average.
People and homes.
7,130 residents in 3,271 households, next to the Windsor and Maidenhead average.
Source: Census 2021, Office for National Statistics
Prices.
Quarterly median of standard sales in St Mary's and Windsor and Maidenhead.
Source: HM Land Registry Price Paid Data, sales to 28 Aug 2026
Safety.
Police recorded 1,360 crimes and incidents in St Mary's in the 12 months to Aug 2026: 191 per 1,000 residents, against 68 across Windsor and Maidenhead.
Police.uk records crimes by approximate location, not by where victims or offenders live. Busy streets, shops, stations and nightlife record more. Figures are counts, not a measure of personal risk. Rates per resident are higher wherever many people visit but few live, such as city centres.
Source: data.police.uk street-level crime, Thames Valley Police (Open Government Licence v3.0)
Food hygiene.
Food businesses in St Mary's with a published hygiene rating.
Council food safety officers rate businesses from 0 (urgent improvement necessary) to 5 (very good) for hygiene, the state of the premises and how food safety is managed. A rating reflects the standards found on the day of inspection, not the quality of the food.
Source: Food Standards Agency, food hygiene rating data as of 26 October 2026 (Open Government Licence)