19 listed buildings, 1 of them Grade I
Historic England lists them inside South Mimms’ built-up area.
33% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →Each edition grades its towns against each other only.

A village of 711 in Hertfordshire, East of England.
Grades need 1,000 residents, so South Mimms has none; the figures on this page are still real. 19 buildings are listed here, 1 at Grade I. 33% of homes were built before 1919. The median sale price is £375,000.
The 3 things South Mimms does most differently from other towns.
Historic England lists them inside South Mimms’ built-up area.
33% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →Museums, castles, gardens and days out in and near South Mimms. Best known first.
Historic houseWrotham Park1.9 km outside town, to the southeast
MuseumDe Havilland Aircraft Museum2.7 km outside town, to the northwest
MuseumBarnet Museum3.8 km outside town, to the southeast
Historic houseTyttenhanger House4.2 km outside town, to the northwest
MuseumPotters Bar Museum2 km outside town, to the eastPark or estatePark or estate · National TrustMorven Park3.6 km outside town, to the eastPhotos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Data highlights are ordered by what stands out in South Mimms.
The Census was taken on 21 March 2021, in lockdown, so 36% of workers were mainly at home; shares here are of those who travelled.
Households had £71K a year before tax, about level with Hertfordshire’s towns (£70K) and above England’s towns (£55K). 5% of commuters who live in South Mimms also work there. There are 2.5 jobs in South Mimms for each resident in work.
ONS Census 2021, method of travel and distance to work · ONS small-area income · DWP claimant count · OGL
70% of pupils at the 9 primary schools within 3 km met the expected standard in reading, writing and maths (three-year average). Its one school is below. Secondary results at the 2 secondary schools within 3 km: an Attainment 8 score of 55.3, with 61% at grade 5 or above in English and maths.
| School | Level | Pupils | Letter |
|---|---|---|---|
| St Giles' CofE Primary SchoolLargest primary schoolPrimary | Primary | 83 | D− |
Private renters make up 14% of households. From September 2023 to August 2026, 13 homes sold inside South Mimms’s built-up area at standard prices; the middle one went for £375,000. Households that own their home make up 61%.
| By type | Median | Sales |
|---|---|---|
| Terraced | £363,250 | 7 |
HM Land Registry Price Paid · ONS private rents · MHCLG / Welsh Government council tax · ONS Census 2021 tenure · OGL
Violence and sexual offences were just over a tenth of the crimes. Burglary and damage come to 101.3 per 1,000 residents a year. Police recorded 379 crimes inside South Mimms’s built-up area in the 12 months to August 2026, plus 34 reports of anti-social behaviour. There were 70.8 anti-social behaviour reports per 1,000 residents (not graded), higher than both Hertfordshire’s towns (14.3) and England’s towns (7.8).
Not gradedAnti-social behaviour, shoplifting and other theft are shown but left out of the Safety Grade, which counts violence and crimes against homes and vehicles per resident.
data.police.uk street-level crime · points inside the ONS built-up-area boundary · OGL · The police category of violence and sexual offences includes harassment and stalking.
There is no GP practice in South Mimms: the nearest is 2.3 miles off. The nearest A&E to South Mimms is Barnet General Hospital, 3.3 miles away. A disability affects 17% of people here.
| Census 2021 | South Mimms | Hertfordshire | England |
|---|---|---|---|
| Good or very good health | 83% | 85% | 82% |
| Bad or very bad health | 4.9% | 3.8% | 5.2% |
| Disabled (Equality Act) | 17% | 14% | 17% |
ONS Census 2021, general health and disability · OHID Fingertips, life expectancy 2019–23 · OGL · Because the census answers ignore age, a younger population lifts them; that is why the Health Grade is built on age-adjusted measures like life expectancy and early deaths.
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
South Mimms’s listed buildings include the Church of St Giles, Grade I. Of South Mimms’ land, 32% lies in conservation areas, above both Hertfordshire’s towns (11%) and England’s towns (7%). Grade II* covers 1 of them, Grade I 1.
Historic England list, October 2026 · Valuation Office Agency, homes by build period · OGL
Ages in South Mimms split evenly at 42.1: half are older, half younger. 17% are under 15, about level with England’s towns (18%) and below Hertfordshire’s towns (19%). The share aged 15 to 24 is 12%.
51% women, 49% men
About an even split. Across England, 51% of residents are women.
| South Mimms | Hertfordshire | England | |
|---|---|---|---|
| Under 15 | 17% | 19% | 18% |
| 15–24 | 12% | 11% | 12% |
| 25–44 | 24% | 27% | 27% |
| 45–64 | 30% | 26% | 25% |
| 65+ | 17% | 17% | 18% |
| No qualifications | 18% | 15% | 18% |
| Apprenticeship | 5.8% | 4.5% | 5.3% |
| A levels or similar | 18% | 16% | 17% |
| Degree level | 32% | 39% | 34% |
ONS Census 2021 · Hertfordshire and England: all residents of their built-up areas · OGL
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| South Mimms | 711 | — | — | — | — | — |
| Potters Bar | 23,394 | 1.9 | B+ | C− | C | B+ |
| Shenley | 3,556 | 2.4 | B− | D | B | C+ |
| Brookmans Park | 4,033 | 2.4 | A | D | B | A+ |
| Welham Green | 2,962 | 2.7 | C+ | C− | C+ | B |
| Colney Heath | 1,059 | 2.8 | — | C | C+ | B |
| Borehamwood | 39,760 | 3.1 | C | C− | C− | C |
| London Colney | 7,932 | 3.4 | B+ | B | C− | B |
Colney Heath has fewer than 2,500 residents, so it gets subject grades but no overall grade. People: Census 2021. Miles: centre to centre.
That is 11 times the typical UK town for its size. Its Grade I building is Church of St Giles.
Private rents in the Hertsmere council area averaged £1,829 a month in August 2026.
Village in Hertfordshire, England
South Mimms is a built-up area of 711 people, in the Hertsmere council area. TownRatings uses ONS’s 2022 built-up areas as towns: the physical town, as people mean the word, rather than a council district, so its figures cover the town itself.
Built from ONS geography and Census 2021
Sources: ONS Census 2021, output areas summed to the ONS 2022 built-up area · HM Land Registry Price Paid (standard sales, September 2023 to August 2026) · ONS Price Index of Private Rents (August 2026, by council) · MHCLG and Welsh Government council tax, Band D 2026–27 (with parish precepts in England) · data.police.uk street-level crime, 36 months to August 2026, points inside the built-up-area boundary · ONS small-area life expectancy and healthy life expectancy, 2019 to 2023 (England and Wales), OHID Fingertips small-area indicators (England) and Census 2021 health, adjusted for age · ONS small-area income estimates (financial year ending 2023) · DWP claimant count via Nomis (January to August 2026) · Historic England, National Heritage List for England (listed buildings, scheduled monuments, registered parks and gardens, battlefields, World Heritage Sites), October 2026, inside the ONS 2022 built-up-area boundary · Valuation Office Agency, Council Tax: stock of properties by build period (31 March 2025) · TownRatings grades: our own summary of the data, ranked against UK towns only. All under the Open Government Licence v3.0.
Contains public sector information licensed under the Open Government Licence v3.0. Contains HM Land Registry data © Crown copyright and database right 2026. Contains OS data © Crown copyright and database right 2026 (ONS boundaries). Northern Ireland: Source: NISRA; contains Land & Property Services data and Ordnance Survey of Northern Ireland information, © Crown copyright, licensed under the Open Government Licence v3.0. Scotland: contains National Records of Scotland data, Registers of Scotland data and SEPA data, © Crown copyright / © SEPA 2025, licensed under the Open Government Licence v3.0.