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People and census in Hertsmere

District

The south west of the East of England. 110,242 people in 101 square kilometres.

24 layers about people and census for Hertsmere, each at the level its publisher released it, with its own date and source.

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Population by output area

Census 2021, England and Wales

Under 129379 or more

Hertsmere’s 323 output areas range from 110 to 608.

What is the population of Hertsmere?

Hertsmere had 107,827 usual residents at the census.

Hertsmere is the 95th least populated of 361 in the UK.

Population

Council
107,827
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

Hertsmere had 107,827 usual residents at the census.

Hertsmere is the 95th least populated of 361 in the UK.

Open in mapSource and methodEvery council ranked
Population: Hertsmere among every council361 areas from 2,053 to 1,144,919. The middle area is 143,926. Hertsmere is 107,827.

Population estimate

Council
110,242
ONS population estimates · 2025

Hertsmere’s population was an estimated 110,242 in mid-2025.

The population rose 0.2% in the year to mid-2025.

Hertsmere is 90th least populated of 361 for population.

Open in mapSource and methodEvery council ranked
Population estimate: Hertsmere among every council361 areas from 2,299 to 1,176,960. The middle area is 148,772. Hertsmere is 110,242.

Aged 15 to 64

Council
63.5%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

63.5% of residents in Hertsmere were aged 15 to 64 at the census.

In East of England the figure is 62.8%.

Against East of England
1% higher62.8%
Open in mapSource and methodEvery council ranked
Aged 15 to 64: Hertsmere among every council361 areas from 53.9% to 79.6%. The middle area is 62.8%. Hertsmere is 63.5%.

Aged 65 and over

Council
17.7%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

17.7% of residents in Hertsmere were aged 65 or over at the census.

In East of England the figure is 19.6%.

Against East of England
10% lower19.6%
Open in mapSource and methodEvery council ranked
Aged 65 and over: Hertsmere among every council361 areas from 5.6% to 33.5%. The middle area is 19.7%. Hertsmere is 17.7%.

Aged under 15

Council
18.8%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

18.8% of residents in Hertsmere were aged under 15 at the census.

In East of England the figure is 17.6%.

Against East of England
7% higher17.6%
Open in mapSource and methodEvery council ranked
Aged under 15: Hertsmere among every council361 areas from 6.4% to 24.6%. The middle area is 16.9%. Hertsmere is 18.8%.

Born outside the UK

Council
22.9%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

22.9% of residents in Hertsmere were born outside the UK.

In East of England the figure is 14.9%.

Against East of England
1.5 times14.9%
Open in mapSource and methodEvery council ranked
Born outside the UK: Hertsmere among every council361 areas from 2.6% to 56.1%. The middle area is 9.9%. Hertsmere is 22.9%.

Disability

Council
14.0%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

14.0% of residents in Hertsmere had their day-to-day activities limited by a long-term health problem or disability.

In East of England the figure is 16.6%.

Against East of England
16% lower16.6%
Open in mapSource and methodEvery council ranked
Disability: Hertsmere among every council361 areas from 10.7% to 29.3%. The middle area is 18.5%. Hertsmere is 14.0%.

Good or very good health

Council
85.4%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

85.4% of residents in Hertsmere said their health was good or very good.

In East of England the figure is 82.9%.

Against East of England
3% higher82.9%
Open in mapSource and methodEvery council ranked
Good or very good health: Hertsmere among every council361 areas from 73.6% to 89.3%. The middle area is 81.7%. Hertsmere is 85.4%.

Households

Council
42,682
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

Hertsmere had 42,682 households at the census.

Hertsmere is 78th lowest of 361 for the number of households.

Open in mapSource and methodEvery council ranked
Households: Hertsmere among every council361 areas from 942 to 423,456. The middle area is 60,932. Hertsmere is 42,682.

Households without a car or van

Council
15.5%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

15.5% of households in Hertsmere had no car or van at the census.

In East of England the figure is 16.8%.

Against East of England
8% lower16.8%
Open in mapSource and methodEvery council ranked
Households without a car or van: Hertsmere among every council361 areas from 7.8% to 77.2%. The middle area is 18.6%. Hertsmere is 15.5%.

Owner-occupied homes

Council
65.3%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

65.3% of households in Hertsmere owned their home at the census.

In East of England the figure is 66.2%.

Against East of England
1% lower66.2%
Open in mapSource and methodEvery council ranked
Owner-occupied homes: Hertsmere among every council361 areas from 25.7% to 82.6%. The middle area is 67.3%. Hertsmere is 65.3%.

Population density

Council
1,066 per km²
Worked out by Open Index · 2021

Hertsmere had 1,066 people per square kilometre at the census.

In East of England the figure is 331 per km².

Worked out by Open Index from census population counts and the area of each place.

Against East of England
3.2 times331 per km²
Open in mapSource and methodEvery council ranked
Population density: Hertsmere among every council361 areas from 8 per km² to 15,696 per km². The middle area is 568 per km². Hertsmere is 1,066 per km².

Private rented homes

Council
17.3%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

17.3% of households in Hertsmere rented privately at the census.

In East of England the figure is 18.2%.

Against East of England
5% lower18.2%
Open in mapSource and methodEvery council ranked
Private rented homes: Hertsmere among every council361 areas from 5.7% to 48.3%. The middle area is 17.3%. Hertsmere is 17.3%.

Social rented homes

Council
17.3%
ONS Census 2021 and Scotland's Census 2022 and NISRA Census 2021 · 2021

17.3% of households in Hertsmere rented from a council or housing association at the census.

In East of England the figure is 15.5%.

Against East of England
12% higher15.5%
Open in mapSource and methodEvery council ranked
Social rented homes: Hertsmere among every council361 areas from 5.5% to 40.5%. The middle area is 14.6%. Hertsmere is 17.3%.

Degree-level qualifications

CouncilEngland, Wales and Northern Ireland only
39.6%
ONS Census 2021 and NISRA Census 2021 · 2021

39.6% of residents aged 16 and over in Hertsmere had a degree-level qualification at the census.

In East of England the figure is 31.6%.

Against East of England
25% higher31.6%
Open in mapSource and methodEvery council ranked
Degree-level qualifications: Hertsmere among every council329 areas from 18.2% to 74.2%. The middle area is 31.8%. Hertsmere is 39.6%.

Asian, Asian British or Asian Welsh

CouncilEngland and Wales only
10.5%
ONS Census 2021 · 2021

10.5% of residents in Hertsmere identified with the Asian, Asian British or Asian Welsh ethnic group.

In East of England the figure is 6.4%.

Against East of England
1.6 times6.4%
Open in mapSource and methodEvery council ranked
Asian, Asian British or Asian Welsh: Hertsmere among every council318 areas from 0.3% to 47.3%. The middle area is 3.6%. Hertsmere is 10.5%.

Black, Black British, Black Welsh, Caribbean or African

CouncilEngland and Wales only
4.8%
ONS Census 2021 · 2021

4.8% of residents in Hertsmere identified with the Black, Black British, Black Welsh, Caribbean or African ethnic group.

In East of England the figure is 2.9%.

Against East of England
1.7 times2.9%
Open in mapSource and methodEvery council ranked
Black, Black British, Black Welsh, Caribbean or African: Hertsmere among every council318 areas from 0.1% to 26.8%. The middle area is 1.1%. Hertsmere is 4.8%.

Mixed or Multiple ethnic groups

CouncilEngland and Wales only
3.7%
ONS Census 2021 · 2021

3.7% of residents in Hertsmere identified with a Mixed or Multiple ethnic group.

In East of England the figure is 2.8%.

Against East of England
32% higher2.8%
Open in mapSource and methodEvery council ranked
Mixed or Multiple ethnic groups: Hertsmere among every council318 areas from 0.7% to 8.1%. The middle area is 2.2%. Hertsmere is 3.7%.

Other ethnic group

CouncilEngland and Wales only
3.8%
ONS Census 2021 · 2021

3.8% of residents in Hertsmere identified with another ethnic group, including Arab.

In East of England the figure is 1.4%.

Against East of England
2.7 times1.4%
Open in mapSource and methodEvery council ranked
Other ethnic group: Hertsmere among every council318 areas from 0.2% to 13.5%. The middle area is 0.9%. Hertsmere is 3.8%.

White ethnic groups

CouncilEngland and Wales only
77.1%
ONS Census 2021 · 2021

77.1% of residents in Hertsmere identified with a White ethnic group.

In East of England the figure is 86.5%.

Against East of England
11% lower86.5%
Open in mapSource and methodEvery council ranked
White ethnic groups: Hertsmere among every council318 areas from 30.8% to 98.2%. The middle area is 92.2%. Hertsmere is 77.1%.

Christian

CouncilEngland and Wales only
41.8%
ONS Census 2021 · 2021

41.8% of residents in Hertsmere said they were Christian.

In East of England the figure is 46.6%.

Against East of England
10% lower46.6%
Open in mapSource and methodEvery council ranked
Christian: Hertsmere among every council318 areas from 22.3% to 66.6%. The middle area is 47.9%. Hertsmere is 41.8%.

No religion

CouncilEngland and Wales only
24.2%
ONS Census 2021 · 2021

24.2% of residents in Hertsmere said they had no religion.

In East of England the figure is 40.2%.

Against East of England
40% lower40.2%
Open in mapSource and methodEvery council ranked
No religion: Hertsmere among every council318 areas from 10.6% to 56.7%. The middle area is 39.9%. Hertsmere is 24.2%.

Working mainly from home

CouncilEngland and Wales only
39.9%
ONS Census 2021 · 2021

39.9% of working residents in Hertsmere worked mainly from home in March 2021.

In East of England the figure is 31.9%.

Against East of England
25% higher31.9%
Open in mapSource and methodEvery council ranked
Working mainly from home: Hertsmere among every council318 areas from 10.6% to 67.3%. The middle area is 29.6%. Hertsmere is 39.9%.

Annual population change

Council
0.2%
Worked out by Open Index · 2025

Hertsmere’s estimated population changed by 0.2% in the year to mid-2025.

Worked out by Open Index from the mid-year population estimates.

Against East of England
71% lower0.7%
Against the UK
33% lower0.3%
Open in mapSource and methodEvery council ranked
Annual population change: Hertsmere among every council361 areas from −3.5% to 2.4%. The middle area is 0.4%. Hertsmere is 0.2%.