Ostrov (Constanța County): population and statistics
Ostrov has a population of 4,566 (2026) across 177.1 km², or 25.8 people per km². It ranks 878 of 3,181 localities by population. Its population is falling: −9.3% between 2016 and 2026.
- 4,566 residents
- 177.1 km²
- 26 people/km²
Key points
Among the 70 localities in Constanța County, Ostrov ranks No. 30 by population.
Building permits for residential buildings per 1,000 inhabitants: 0.22 ‰ in Ostrov, compared with an average of 2.01 ‰ in Constanța County and 1.87 ‰ nationally.
Drinking water distributed per inhabitant (m³): 70.3 m³ in Ostrov, compared with an average of 54.9 m³ in Constanța County and 39.9 m³ nationally.
Ostrov: the most common activity among active businesses is Retail trade (except motor vehicles) (33 businesses).
Ostrov in numbers
Where is Ostrov?
Population of Ostrov over time
Ostrov had 5,036 residents in 2016 and 4,566 in 2026.
| Year | Population (by registered residence) |
|---|---|
| 2021 | 4,758 |
| 2022 | 4,694 |
| 2023 | 4,659 |
| 2024 | 4,619 |
| 2025 | 4,594 |
| 2026 | 4,566 |
Did you know?
- “Building permits for residential buildings per 1,000 inhabitants”: lower than in 98% of localities.
- “Drinking water distributed per inhabitant (m³)”: higher than in 93% of localities.
- “Family doctors per 1,000 inhabitants”: lower than in 93% of localities.
- Its area is roughly equal to 24,801 football pitches.
- Its population density is 3.5 times lower than the national average.
- The nearest more populous locality is Modelu (10,564 residents), 11 km away.
All indicators for Ostrov
Value for the locality, then the regional average and the national median (for counts: regional and national totals). The gauge places the locality between the lowest and highest value in the country.
Population
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| People settling in the municipality per 1,000 inhabitants (2025) | 11.4 ‰ | 19.2 ‰ | 16.0 ‰ | ranked 2,582 of 3,163 | |
| People leaving the municipality per 1,000 inhabitants (2025) | 15.5 ‰ | 20.3 ‰ | 17.3 ‰ | ranked 2,030 of 3,163 | |
| Live births per 1,000 inhabitants (2025) | 10.5 ‰ | 6.6 ‰ | 6.9 ‰ | ranked 363 of 3,157 | |
| Deaths per 1,000 inhabitants (2025) | 13.4 ‰ | 10.7 ‰ | 13.0 ‰ | ranked 1,460 of 3,163 |
Housing
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Length of the drinking-water network per 1,000 inhabitants (2025) | 5.65 km | 4.56 km | 7.67 km | ranked 1,880 of 2,728 | |
| Building permits for residential buildings per 1,000 inhabitants (2025) | 0.22 ‰ | 2.01 ‰ | 1.53 ‰ | ranked 2,396 of 2,438 | |
| Existing dwellings (2025) | 2,261 | 341,463 | 10,177,161 | ranked 745 of 3,181 | |
| Dwellings per 1,000 inhabitants (2025) | 495.2 ‰ | 459.8 ‰ | 484.8 ‰ | ranked 1,462 of 3,163 | |
| Average living floor area per dwelling (m²) (2025) | 52.6 m² | 50.3 m² | 50.3 m² | ranked 1,301 of 3,163 |
Economy
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Active companies in the trade register per 1,000 inhabitants (2026) | 14.0 ‰ | 66.2 ‰ | 29.4 ‰ | ranked 2,861 of 3,163 | |
| Companies registered in the last 12 months per 1,000 inhabitants (2026) | 1.53 ‰ | 4.12 ‰ | 2.10 ‰ | ranked 2,122 of 3,163 |
Employment
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Average number of employees per 1,000 inhabitants (2024) | 84 ‰ | 259 ‰ | 71 ‰ | ranked 1,283 of 3,163 | |
| Registered unemployed as a share of labour resources (working-age population) (2026) | 5.1% | 1.3% | 2.3% | ranked 684 of 3,163 |
Tourism
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Tourist overnight stays per inhabitant (2025) | 0.0 nights | 10.0 | 0.4 | ranked 1,070 of 1,250 | |
| Tourist arrivals per 1,000 inhabitants (2025) | 23 ‰ | 3,251 ‰ | 200 ‰ | ranked 1,085 of 1,250 | |
| Tourist accommodation places per 1,000 inhabitants (2025) | 6.6 ‰ | 217.5 ‰ | 11.8 ‰ | ranked 939 of 1,362 |
Environment
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Drinking water distributed per inhabitant (m³) (2025) | 70.3 m³ | 54.9 m³ | 27.2 m³ | ranked 182 of 2,656 | |
| Length of the sewer network per 1,000 inhabitants (2025) | 1.62 km | 2.97 km | 4.05 km | ranked 1,414 of 1,695 |
Health
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| Doctors per 1,000 inhabitants (2024) | 0.66 ‰ | 3.89 ‰ | 0.52 ‰ | ranked 989 of 2,833 | |
| Family doctors per 1,000 inhabitants (2024) | 0.22 ‰ | 0.61 ‰ | 0.46 ‰ | ranked 2,606 of 2,807 | |
| Pharmacists per 1,000 inhabitants (2024) | 0.66 ‰ | 1.47 ‰ | 0.47 ‰ | ranked 625 of 2,248 |
Education
| Indicator | Ostrov | Constanța County | National | Position? | Rank |
|---|---|---|---|---|---|
| School population (children, pupils and students) per 1,000 inhabitants (2025) | 122 ‰ | 179 ‰ | 91 ‰ | ranked 669 of 3,158 | |
| Education units per 10,000 inhabitants (2025) | 2.2 per 10,000 inh. | 2.8 per 10,000 inh. | 3.6 per 10,000 inh. | ranked 2,489 of 3,122 |
Businesses by activity: Ostrov
Active businesses in the business register with a recorded activity, by section and by activity (NACE Rev. 2). Only activities with at least 3 businesses are shown.
By industry section
- Wholesale and retail trade43 · 28.1%
- Transport and storage20 · 13.1%
- Agriculture, forestry and fishing16 · 10.5%
- Accommodation and food services16 · 10.5%
- Administrative and support services16 · 10.5%
- Manufacturing11 · 7.2%
- Construction8 · 5.2%
- Arts, entertainment and recreation5 · 3.3%
Most common activities
- Retail trade (except motor vehicles)33 · 21.6%
- Wholesale trade (except motor vehicles)28 · 18.3%
- Warehousing and transport support activities16 · 10.5%
- Food and beverage service activities16 · 10.5%
- Land transport and transport via pipelines15 · 9.8%
- Crop and animal production, hunting and related services14 · 9.2%
- Rental and leasing activities8 · 5.2%
- Specialised construction activities7 · 4.6%
- Construction of buildings5 · 3.3%
- Accommodation5 · 3.3%
Frequently asked questions
What is the population of Ostrov?
Ostrov has 4,566 residents (2026), ranking 878 of 3,181 localities.
How big is Ostrov?
Ostrov covers 177.1 km², with a density of 26 people per km².
Is the population of Ostrov growing?
Between 2016 and 2026, the population of Ostrov went from 5,036 to 4,566, a change of −9.3%.
Where is Ostrov?
Ostrov is in Constanța County. Latitude 44.102, longitude 27.402.
Building permits for residential buildings per 1,000 inhabitants: what is the figure for Ostrov?
In Ostrov, “Building permits for residential buildings per 1,000 inhabitants” stands at 0.22 ‰ (2025), ranking 2,396 of 2,438 localities; the national median is 1.53 ‰.
Drinking water distributed per inhabitant (m³): what is the figure for Ostrov?
In Ostrov, “Drinking water distributed per inhabitant (m³)” stands at 70.3 m³ (2025), ranking 182 of 2,656 localities; the national median is 27.2 m³.
Which localities border Ostrov?
The nearest to Ostrov are Modelu (11 km), Călărași (12 km), Lipnița (13 km), Roseți (15 km), Dichiseni (18 km).