Onhaye: population and statistics
Onhaye has a population of 3,262 (2026) across 65.7 km², or 49.7 people per km². It ranks 538 of 565 municipalities by population. Its population is growing: +3.1% between 2016 and 2026.
- 3,262 residents
- 65.7 km²
- 50 people/km²
- 231 m
Key points
Among the 38 municipalities in Namur, Onhaye ranks No. 36 by population.
Largest business sector: Agriculture, forestry and fishing, with 19.0% of the area's businesses.
A 1 kWp solar panel tilted at 38° generates about 1,049 kWh a year here.
Did you know?
- “Number of dwellings”: lower than in 94% of municipalities.
- “VAT-liable enterprises”: lower than in 94% of municipalities.
- “Share of inhabitants of foreign nationality”: lower than in 90% of municipalities.
- Its area is roughly equal to 9,197 football pitches.
- Its population density is 7.8 times lower than the national average.
- The nearest more populous municipality is Hastière (6,077 residents), 3.7 km away.
- A 4 kWp rooftop solar system here would generate about 4,196 kWh a year, roughly what an average household uses.
Onhaye in numbers
All indicators for Onhaye
Value for the municipality, then the regional average and the national median (for counts: regional and national totals). The gauge places the municipality between the lowest and highest value in the country.
Population
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants aged 65 and over (2026) | 20.8% | 21.0% | 21.7% | ranked 355 of 564 | |
| Share of inhabitants under 20 (2026) | 22.3% | 21.4% | 21.5% | ranked 185 of 564 |
Housing
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings built before 1946 (2024) | 50.8% | – | 34.6% | ranked 104 of 564 | |
| Buildings built after 2001 (2024) | 12.4% | – | 15.3% | ranked 391 of 564 | |
| Share of houses in the building stock (2024) | 69.9% | – | 79.9% | ranked 509 of 564 | |
| Number of dwellings (2024) | 1,672 | 245,760 | 5,783,434 | ranked 533 of 565 | |
| New dwellings authorised per year per 1,000 inhabitants (2021-2025) | 3.56 ‰ inh. | 3.41 ‰ inh. | 4.39 ‰ inh. | ranked 363 of 564 |
Energy
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| Residential buildings with central heating or air conditioning (2024) | 66.5% | – | 76.7% | ranked 465 of 564 |
Economy
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| VAT-liable enterprises (2024) | 331 | 46,082 | 1,170,010 | ranked 533 of 565 | |
| VAT-liable enterprises per 1,000 inhabitants (2024) | 101.5 ‰ inh. | 91.0 ‰ inh. | 102.2 ‰ inh. | ranked 293 of 564 | |
| Net taxable income per inhabitant (2023) | 22,474 € | 22,869 € | 24,247 € | ranked 392 of 564 | |
| Median disposable income (administrative) (2023) | 29,856 € | – | 30,830 € | ranked 371 of 551 | |
| Median selling price of houses (2025) | 265,000 € | – | 302,500 € | ranked 387 of 554 |
Transport
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| Cars per household (2025) | 1.29 | 1.16 | 1.25 | ranked 198 of 564 | |
| Households without a car (2025) | 15.0% | 22.4% | 17.6% | ranked 444 of 564 |
Society
| Indicator | Onhaye | Namur | National | Position | Rank |
|---|---|---|---|---|---|
| Share of inhabitants of foreign nationality (2026) | 3.5% | 6.1% | 6.4% | ranked 504 of 564 | |
| Administrative poverty risk (2023) | 8.1% | 10.5% | 7.0% | ranked 213 of 551 |
Population of Onhaye over time
Onhaye had 3,164 residents in 2016 and 3,262 in 2026.
| Year | Population |
|---|---|
| 2021 | 3,247 |
| 2022 | 3,267 |
| 2023 | 3,277 |
| 2024 | 3,231 |
| 2025 | 3,243 |
| 2026 | 3,262 |
Where is Onhaye?
Business sectors: Onhaye
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Agriculture, forestry and fishing19.0% ×4.6
- Construction15.7% ×1.1
- Wholesale and retail trade12.1% ×0.8
- Professional, scientific and technical9.1% ×0.4
- Other service activities8.5% ×1.3
- Manufacturing6.6% ×1.4
- Administrative and support services6.3% ×1.0
- Health and social work6.0% ×1.3
Sunshine and temperatures: Onhaye
Frequently asked questions
What is the population of Onhaye?
Onhaye has 3,262 residents (2026), ranking 538 of 565 municipalities.
How big is Onhaye?
Onhaye covers 65.7 km², with a density of 50 people per km².
Is the population of Onhaye growing?
Between 2016 and 2026, the population of Onhaye went from 3,164 to 3,262, a change of +3.1%.
Where is Onhaye?
Onhaye is in Namur. It belongs to Dinant (arrondissement). Latitude 50.250, longitude 4.833.
Number of dwellings: what is the figure for Onhaye?
In Onhaye, “Number of dwellings” stands at 1,672 (2024), ranking 533 of 565 municipalities; the national median is 6,052.
VAT-liable enterprises: what is the figure for Onhaye?
In Onhaye, “VAT-liable enterprises” stands at 331 (2024), ranking 533 of 565 municipalities; the national median is 1,324.
How much electricity does a solar panel produce in Onhaye?
In Onhaye, a 1 kWp south-facing system tilted at 38° produces about 1,049 kWh a year.
Which municipalities border Onhaye?
The nearest to Onhaye are Hastière (3.7 km), Dinant (5.8 km), Anhée (7.3 km), Yvoir (9.0 km), Doische (14 km).
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