North Mymms’s story
1 listed building
Historic England lists them inside North Mymms’ built-up area.
17% of its homes were built before 1919, against 15% in the typical UK town.
Explore the history →
North MymmsHertfordshire
This village in Hertfordshire, East of England has a population of 354.
7 places within 12 milesMap →
Photo: John Salmon · CC BY-SA 2.0
Population
354
Census 2021 · Welwyn Hatfield council
Median age
25.7
10% are 65+ · Hertfordshire 17%
Degree level
36%
of residents 16+ · England 34%
Walk, cycle, bus
35%
of commuters · England 27%
Is North Mymms a good place to live?
Towns under 1,000 residents aren’t graded, so North Mymms has no grades; its figures are still real. One resident in 2 is 15 to 24. Just over a third of commuters walk, cycle or take public transport. 42% of households own their home with no mortgage.
What makes North Mymms stand out
The 3 things North Mymms does most differently from other towns.
Residents aged 15 to 24
Who lives here
1 in 2 is 15 to 24
41% of residents, against 12% across England’s towns
Walk, cycle or public transport
Getting around
35% walk, cycle or ride
of commuters walk, cycle or take public transport (England’s towns 27%)
45% of commuters travel under 5 km.
Own outright
Housing
42% own outright
of households own their home with no mortgage (England’s towns 32%)
The data
Data highlights are ordered by what stands out in North Mymms.
Who lives here
Children make up only 6.5% of North Mymms, fewer than in both Hertfordshire’s towns and England’s towns
25.7median age
People 65 and over make up a tenth of the town, below both Hertfordshire’s towns (17%) and England’s towns (18%). Young adults of 15 to 24 are just over two fifths of the population. Ages in North Mymms split evenly at 25.7: half are older, half younger.
North MymmsHertfordshireEngland
Ages · share of residents
41%
Qualifications · residents 16 and older
No qualifications5%
Apprenticeship2%
A levels or similar39%
Degree level36%
Women and men · all residents
69% women, 31% men
About 44 men for every 100 women. Across England, 51% of residents are women. North Mymms is a campus town: students living in halls or boarding houses count as residents.
| North Mymms | Hertfordshire | England | |
|---|---|---|---|
| Under 15 | 6.5% | 19% | 18% |
| 15–24 | 41% | 11% | 12% |
| 25–44 | 29% | 27% | 27% |
| 45–64 | 14% | 26% | 25% |
| 65+ | 9.6% | 17% | 18% |
| No qualifications | 5.5% | 15% | 18% |
| Apprenticeship | 2.1% | 4.5% | 5.3% |
| A levels or similar | 39% | 16% | 17% |
| Degree level | 36% | 39% | 34% |
ONS Census 2021 · Hertfordshire and England: all residents of their built-up areas · OGL
Work & commute
North Mymms gets to work on foot, by bike and by public transport more than in both Hertfordshire’s towns and England’s towns: 35% of commuters
35%walk, cycle or ride
The Census was taken on 21 March 2021, in lockdown, so 48% of workers were mainly at home; shares here are of those who travelled.
The car carried nearly two thirds of commuters at the census. 48% of workers worked mainly from home, above both Hertfordshire’s towns (39%) and England’s towns (31%). Households take home £57K a year before tax, on average. About 14% of its commuters stay in North Mymms for work.
How commuters got to work · March 2021
Driving65%
On foot22%
Train13%
45%
of commuters travel under 5 km · England 45%
48%
worked mainly from home in March 2021
£57K
mean household income, before tax
1.8%
of 16 to 64s claim unemployment benefits (2026)
ONS Census 2021, method of travel and distance to work · ONS small-area income · DWP claimant count · OGL
Housing
Most households in North Mymms own their home: 76%, more than in both Hertfordshire’s towns and England’s towns
£0Kmedian sale
1% live in social housing, below both Hertfordshire’s towns (18%) and England’s towns (18%). The private rented sector houses just over a fifth of households. Private rents average £1,512 a month across the Welwyn Hatfield council area.
Median sale price · Sep 2023 to Aug 2026
North Mymms£0K
Typical UK town£277K
76%
of households own their home · England 61%
22%
rent privately · England 21%
£1,512
average private rent a month, Welwyn Hatfield council area
£2,453
council tax, Band D, 2026–27
HM Land Registry Price Paid · ONS private rents · MHCLG / Welsh Government council tax · ONS Census 2021 tenure · OGL
Safety
Violence is recorded less often in North Mymms than in Hertfordshire’s towns or across England’s towns: 6.6 per 1,000 residents a year
6.6violent and sexual offences per 1,000 a year
Violence and sexual offences were 18% of the crimes. In the 12 months to August 2026, police logged 11 crimes inside North Mymms’s built-up area. There were 12.2 anti-social behaviour reports per 1,000 residents (not graded), between Hertfordshire’s towns (14.3) and England’s towns (7.8).
Reports by type · Sep 2025 to Aug 2026
Bicycle theft4
Violence & sexual2
Other theft2
Damage & arson1
Public order1
Vehicle crime1
Shoplifting0
Burglary0
Anti-social0
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.
6.6
violent and sexual offences per 1,000 residents a year, averaged Sep 2023 to Aug 2026
6.6
burglary, vehicle crime and damage per 1,000 a year, averaged Sep 2023 to Aug 2026
12.2
anti-social behaviour reports per 1,000 (not graded)
11
crimes recorded in the 12 months to August 2026
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.
Health
93% of people in North Mymms say their health is good or very good, more than in both Hertfordshire’s towns and England’s towns
93%good or very good health
At the census, 2.6% of residents said their health was bad or very bad, below Hertfordshire’s towns (3.8%) and England’s towns (5.2%) alike. Seeing a GP means leaving North Mymms: the nearest practice is 0.9 miles away. The nearest A&E to North Mymms is Barnet General Hospital, 4.4 miles away.
General health, self-reported
Good or very good 93%Fair 5%Bad or very bad 3%
| Census 2021 | North Mymms | Hertfordshire | England |
|---|---|---|---|
| Good or very good health | 93% | 85% | 82% |
| Bad or very bad health | 2.6% | 3.8% | 5.2% |
| Disabled (Equality Act) | 16% | 14% | 17% |
79
life expectancy at birth, men (2019–23)
86.8
life expectancy at birth, women
ONS Census 2021, general health and disability · OHID Fingertips, life expectancy 2019–23 · OGL · No age adjustment applies to these census answers, which flatter younger towns; the Health Grade’s measures, life expectancy and early deaths among them, do allow for age.
History
North Mymms’s listed buildings: 1, all Grade II
1listed buildings
The heritage lists give each building’s grade but not its age, so we don’t say which is oldest.
Homes from before 1919 make up 17% of the total. Per 10,000 residents, North Mymms counts 28 listed buildings, below Hertfordshire’s towns (55) and England’s towns (39) alike.
Listed buildings by grade · Historic England
Grade I0
Grade II*0
Grade II1
0
scheduled monuments
0
registered parks and gardens
17%
of homes built before 1919 · typical UK town 15%
28
listed buildings per 10,000 residents · typical UK town 24
Historic England list, October 2026 · Valuation Office Agency, homes by build period · OGL
Keep exploring
Everything we know about North Mymms
12pages on North Mymms
The big questions
Nearby attractions
All attractions →Hatfield House and 6 more in and around North Mymms
Museums, castles, gardens and days out in and near North Mymms. Best known first.
Historic houseHatfield House4.6 km outside town, to the north
Historic houseWrotham Park4 km outside town, to the south
MuseumDe Havilland Aircraft Museum3.7 km outside town, to the west
Historic houseTyttenhanger House4.3 km outside town, to the west
MuseumPotters Bar Museum2.1 km outside town, to the southeastPark or estatePark or estate · National TrustMorven Park2.5 km outside town, to the southeastPlaces: © OpenStreetMap contributors · Wikidata
Photos: each place’s Wikidata image, from Wikimedia Commons under the licence below (our copy, resized).
Photo credits (5)
- Hatfield House: Allan Engelhardt, CC BY-SA 2.0, Wikimedia Commons
- Wrotham Park: British Library HMNTS 10349.ppp.21., Public domain, Wikimedia Commons
- De Havilland Aircraft Museum: Jack Hill, CC BY-SA 2.0, Wikimedia Commons
- Tyttenhanger House: Mike Hartley, CC BY-SA 2.0, Wikimedia Commons
- Potters Bar Museum: Graham Hale, CC BY-SA 2.0, Wikimedia Commons
About North Mymms
Village in Hertfordshire, England
North Mymms is a built-up area of 354 people, in the Welwyn Hatfield 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
- Population
- 354 (Census 2021)
- Council
- Welwyn Hatfield
- County
- Hertfordshire
- Region
- East of England
- Area
- 0.2 sq mi (0.4 km²)
- ONS code
- E63004523
North Mymms’s neighbours
The nearest built-up areas, from ONS’s 2022 boundaries. See them on the map →
Brookmans ParkWelham GreenPotters BarColney HeathHatfieldShenleyLondon ColneyNorth Mymms
How the neighbours grade
| Town | People | Miles | Overall | Cost | Safety | Health |
|---|---|---|---|---|---|---|
| North Mymms | 354 | — | — | — | — | — |
| Brookmans Park | 4,033 | 1 | A | D | B | A+ |
| Welham Green | 2,962 | 1.4 | C+ | C− | C+ | B |
| Potters Bar | 23,394 | 1.5 | B+ | C− | C | B+ |
| Colney Heath | 1,059 | 2.2 | — | C | C+ | B |
| Hatfield | 41,561 | 3.3 | C | C+ | D | C |
| Shenley | 3,556 | 3.6 | B− | D | B | C+ |
| London Colney | 7,932 | 3.8 | 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.
Questions about North Mymms
How many listed buildings are there in North Mymms?
1 on Historic England’s list.
How much is council tax in North Mymms?
Band D council tax in North Mymms is £2,453 for 2026–27, more than in 52% of UK towns (council, county, police and fire, plus the parish or town council). Your own bill depends on your home’s band; check it on GOV.UK.
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.