Castro Daire: population and statistics
Castro Daire has a population of 13,400 (2025) across 379.0 km², or 35.4 people per km². It ranks 161 of 308 municipalities by population. Its population is growing: +1.3% between 2021 and 2025.
- 13,400 residents
- 379.0 km²
- 35 people/km²
- 587 m
Key points
Among the 24 municipalities in Viseu, Castro Daire ranks No. 8 by population.
Owner-occupied usual residences: 89.7% in Castro Daire, compared with an average of 80.7% in Viseu and 69.8% nationally.
Declared gross income per inhabitant: 8,543 € in Castro Daire, compared with an average of 10,408 € in Viseu and 12,214 € nationally.
Largest business sector: Wholesale and retail trade, with 22.2% of the area's businesses.
A 1 kWp solar panel tilted at 34° generates about 1,483 kWh a year here.
Castro Daire in numbers
Where is Castro Daire?
Population of Castro Daire over time
Castro Daire had 13,230 residents in 2021 and 13,400 in 2025.
| Year | Population |
|---|---|
| 2021 | 13,230 |
| 2022 | 13,292 |
| 2023 | 13,359 |
| 2024 | 13,395 |
| 2025 | 13,400 |
Did you know?
- Number 1 in Viseu for “Owner-occupied usual residences”.
- “Owner-occupied usual residences”: higher than in 98% of municipalities.
- “Declared gross income per inhabitant”: lower than in 97% of municipalities.
- “Usual residences with central heating”: higher than in 91% of municipalities.
- Its area is roughly equal to 53,087 football pitches.
- Its population density is 3.5 times lower than the national average.
- The nearest municipality is Vila Nova de Paiva, 17.7 km away.
All indicators for Castro Daire
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 | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Population aged 65 and over (2025) | 34.5% | 28.7% | 26.9% | ranked 58 of 307 | |
| Population under 15 (2025) | 9.9% | 11.5% | 11.7% | ranked 246 of 307 | |
| Ageing index (older people per 100 young people) (2025) | 349.8 | – | 229.9 | ranked 56 of 307 | |
| Population density (inhabitants per km²) (2025) | 35.4 inh./km² | – | 69.6 inh./km² | ranked 204 of 307 | |
| Population change between 2021 and 2025 (2025) | 1.28% | – | 4.50% | ranked 233 of 307 |
Housing
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Buildings (2021) | 11,911 | 207,281 | 3,573,416 | ranked 98 of 308 | |
| Buildings built before 1946 (2021) | 14.5% | 11.7% | 12.8% | ranked 116 of 307 | |
| Buildings built since 2001 (2021) | 17.8% | 18.7% | 16.8% | ranked 130 of 307 | |
| Buildings in need of medium or extensive repair (2021) | 8.4% | 16.7% | 14.2% | ranked 276 of 307 | |
| Conventional family dwellings (2021) | 12,917 | 245,876 | 5,970,677 | ranked 115 of 308 | |
| Dwellings used as secondary residences (2021) | 44.1% | 27.4% | 25.8% | ranked 35 of 307 | |
| Vacant dwellings (2021) | 12.4% | 14.0% | 13.1% | ranked 176 of 307 | |
| Owner-occupied usual residences (2021) | 89.7% | 80.7% | 77.8% | ranked 7 of 307 | |
| Rented usual residences (2021) | 4.6% | 12.7% | 13.6% | ranked 301 of 307 | |
| Usual residences in buildings with 3 or more dwellings (2021) | 10.0% | 20.4% | 13.8% | ranked 189 of 307 | |
| Median selling price of housing per m² (2025) | 669 €/m² | – | 1,108 €/m² | ranked 239 of 305 |
Energy
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Usual residences without heating (2021) | 15.5% | 13.6% | 18.6% | ranked 197 of 307 | |
| Usual residences with central heating (2021) | 32.3% | 32.3% | 12.6% | ranked 28 of 307 | |
| Electricity consumption per inhabitant (2024) | 2,968 kWh/inh. | 4,171 kWh/inh. | 3,690 kWh/inh. | ranked 251 of 307 |
Economy
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Enterprises (2023) | 1,488 | 45,832 | 1,510,274 | ranked 179 of 308 | |
| Enterprises per 1,000 inhabitants (2023) | 111.4 | 127.7 | 128.1 | ranked 241 of 307 | |
| Declared gross income per inhabitant (2024) | 8,543 € | 10,408 € | 10,553 € | ranked 297 of 307 | |
| Purchasing power per capita (Portugal = 100) (2023) | 68.2 | 81.7 | 79.5 | ranked 271 of 307 |
Employment
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Unemployment rate (2021) | 8.6% | 7.4% | 7.0% | ranked 69 of 307 | |
| Average monthly earnings of employees (2024) | 1,163 € | – | 1,258 € | ranked 242 of 307 |
Tourism
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Overnight stays in tourist accommodation (2025) | 16,581 | 1,062,144 | 82,011,658 | ranked 225 of 307 | |
| Overnight stays per 100 inhabitants (2025) | 123.8 | 291.8 | 275.0 | ranked 231 of 306 | |
| Share of overnight stays in local accommodation (alojamento local) (2025) | 19.0% | – | 18.4% | ranked 85 of 178 |
Education
| Indicator | Castro Daire | Viseu | National | Position | Rank |
|---|---|---|---|---|---|
| Population with completed higher education (2021) | 9.6% | 16.1% | 13.2% | ranked 271 of 307 |
Sunshine and temperatures: Castro Daire
Business sectors: Castro Daire
Share of each sector in total businesses; “×1.5” means the sector is 1.5 times more common than nationally.
- Wholesale and retail trade22.2% ×1.5
- Agriculture, forestry and fishing15.9% ×2.0
- Construction12.4% ×1.7
- Accommodation and food services10.0% ×1.2
- Health and social work7.3% ×0.9
- Professional, scientific and technical5.8% ×0.6
- Administrative and support services5.1% ×0.3
- Manufacturing4.4% ×1.0
Frequently asked questions
What is the population of Castro Daire?
Castro Daire has 13,400 residents (2025), ranking 161 of 308 municipalities.
How big is Castro Daire?
Castro Daire covers 379.0 km², with a density of 35 people per km².
Is the population of Castro Daire growing?
Between 2021 and 2025, the population of Castro Daire went from 13,230 to 13,400, a change of +1.3%.
Where is Castro Daire?
Castro Daire is in Viseu. Latitude 40.900, longitude −7.933.
Owner-occupied usual residences: what is the figure for Castro Daire?
In Castro Daire, “Owner-occupied usual residences” stands at 89.7% (2021), ranking 7 of 307 municipalities; the national median is 77.8%.
Declared gross income per inhabitant: what is the figure for Castro Daire?
In Castro Daire, “Declared gross income per inhabitant” stands at 8,543 € (2024), ranking 297 of 307 municipalities; the national median is 10,553 €.
How much electricity does a solar panel produce in Castro Daire?
In Castro Daire, a 1 kWp south-facing system tilted at 34° produces about 1,483 kWh a year.
Which municipalities border Castro Daire?
The nearest to Castro Daire are Vila Nova de Paiva (18 km), Tarouca (18 km), São Pedro do Sul (20 km), Resende (22 km), Cinfães (22 km).
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