Three Rivers: population and statistics
Three Rivers has a population of 96,068 (2025) across 88.8 km², or 1,082 people per km². It ranks 309 of 361 local authorities by population. Its population is growing: +4.5% between 2015 and 2025.
- 96,068 residents
- 88.8 km²
- 1,082 people/km²
Three Rivers in numbers
Population of Three Rivers over time
Three Rivers had 91,961 residents in 2015 and 96,068 in 2025.
| Year | Population |
|---|---|
| 2020 | 93,795 |
| 2021 | 93,934 |
| 2022 | 94,219 |
| 2023 | 95,047 |
| 2024 | 95,575 |
| 2025 | 96,068 |
All indicators for Three Rivers
Value for the area, then the regional average and the UK median (for counts: regional and UK totals). The gauge places the area between the lowest and highest value in the UK.
Population
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Share of residents aged 65 and over (2025) | 18.9% | 20.3% | 20.4% | ranked 229 of 361 | |
| Share of residents aged under 16 (2025) | 19.2% | 18.4% | 17.4% | ranked 77 of 361 |
Housing
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Dwellings (Council Tax stock) (2026) | 39,330 dwellings | 2,888,720 | 27,429,300 | ranked 288 of 318 | |
| Dwellings built before 1940 (2026) | 26.8% | 23.4% | 31.6% | ranked 210 of 318 | |
| Dwellings built since 2000 (2026) | 15.0% | 21.0% | 18.1% | ranked 227 of 318 | |
| Households (Census 2021) (2021) | 36,857 households | 65,170 | 61,440 | ranked 286 of 318 | |
| Households living in a house or bungalow (2021) | 79.7% | 81.7% | 84.7% | ranked 206 of 318 | |
| Households living in a flat or maisonette (2021) | 19.6% | 17.7% | 14.8% | ranked 115 of 318 | |
| Owner-occupied households (incl. shared ownership) (2021) | 71.7% | 66.1% | 67.3% | ranked 75 of 318 | |
| Households renting privately (2021) | 13.4% | 18.3% | 17.6% | ranked 295 of 318 | |
| Households in social housing (2021) | 14.8% | 15.5% | 14.3% | ranked 142 of 318 | |
| Average house price (2026) | £590,816 | £353,838 | £272,474 | ranked 16 of 360 | |
| House price change over 12 months (2026) | 2.3% | 1.1% | 2.2% | ranked 173 of 360 |
Energy
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Households without central heating (2021) | 0.9% | 1.2% | 1.2% | ranked 242 of 318 | |
| Households heated by mains gas only (2021) | 81.4% | 70.3% | 76.7% | ranked 60 of 318 | |
| Households heated by electricity only (2021) | 7.4% | 9.5% | 7.8% | ranked 170 of 318 | |
| Households heated by oil only (2021) | 0.6% | 7.0% | 0.9% | ranked 171 of 318 |
Economy
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Business sites (local units) (2026) | 5,965 sites | 315,875 | 3,232,440 | ranked 210 of 361 | |
| Business sites per 1,000 residents (2026) | 62.1 per 1,000 | 47.8 per 1,000 | 44.4 per 1,000 | ranked 28 of 361 | |
| Registered businesses (enterprises) (2026) | 5,590 businesses | 276,720 | 2,786,975 | ranked 192 of 361 | |
| Median annual pay, full-time residents (gross) (2025) | £43,980 | £41,339 | £38,490 | ranked 64 of 348 |
Jobs
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Employment rate, aged 16-64 (2025-2026) | 82.5% | 78.4% | 76.3% | ranked 38 of 347 | |
| Out-of-work benefit claimants, share of residents aged 16-64 (2026) | 2.7% | 3.3% | 3.2% | ranked 223 of 361 |
Transport
| Indicator | Three Rivers | East | UK | Position | Rank |
|---|---|---|---|---|---|
| Households without a car or van (2021) | 12.5% | 16.9% | 18.5% | ranked 267 of 318 |
Key points
Among the 45 local authorities in East, Three Rivers ranks 39 by population.
Average house price: £590,816 in Three Rivers, compared with an average of £353,838 in East and £308,859 across the UK.
Business sites per 1,000 residents: 62.1 per 1,000 in Three Rivers, compared with an average of 47.8 per 1,000 in East and 46.5 per 1,000 across the UK.
Largest business sector: Professional, scientific and technical, with 18.2% of the area's business sites.
Did you know?
- “Average house price”: higher than in 96% of local authorities.
- “Business sites per 1,000 residents”: higher than in 92% of local authorities.
- Its area is roughly equal to 12,440 football pitches.
- 3.8 times denser than the UK average.
- The nearest local authority is Watford, 5.7 km away.
- The nearest larger neighbour is Hillingdon (326,671 residents), 11 km away.
Business sectors: Three Rivers
Share of each sector in total business sites; “×1.5” means the sector is 1.5 times more common than across the UK.
- Professional, scientific and technical18.2% ×1.3
- Construction16.0% ×1.3
- Wholesale and retail trade12.5% ×0.8
- Information and communication9.9% ×1.6
- Administrative and support services8.8% ×1.1
- Real estate6.0% ×1.4
- Health and social work5.2% ×0.9
- Accommodation and food services4.5% ×0.6
Where is Three Rivers?
Frequently asked questions
What is the population of Three Rivers?
Three Rivers has 96,068 residents (2025), ranking 309 of 361 local authorities.
How big is Three Rivers?
Three Rivers covers 88.8 km², with a density of 1,082 people per km².
Is the population of Three Rivers growing?
Between 2015 and 2025, the population of Three Rivers went from 91,961 to 96,068, a change of +4.5%.
Where is Three Rivers?
Three Rivers is in East (region). Latitude 51.639, longitude −0.469.
Average house price: what is the figure for Three Rivers?
In Three Rivers, “Average house price” stands at £590,816 (2026), ranking 16 of 360 local authorities; the UK median is £272,474.
Business sites per 1,000 residents: what is the figure for Three Rivers?
In Three Rivers, “Business sites per 1,000 residents” stands at 62.1 per 1,000 (2026), ranking 28 of 361 local authorities; the UK median is 44.4 per 1,000.
Which local authorities border Three Rivers?
The nearest to Three Rivers are Watford (5.7 km), Hillingdon (11 km), Harrow (11 km), Hertsmere (14 km), Dacorum (15 km).