Onești: population and statistics
Onești has a population of 46,776 (2026) across 52.5 km², or 892 people per km². It ranks 48 of 3,181 localities by population. Its population is falling: −11.2% between 2016 and 2026.
- 46,776 residents
- 52.5 km²
- 892 people/km²
Key points
Among the 93 localities in Bacău County, Onești ranks No. 2 by population.
Doctors per 1,000 inhabitants: 3.93 ‰ in Onești, compared with an average of 1.61 ‰ in Bacău County and 3.53 ‰ nationally.
Onești: the most common activity among active businesses is Retail trade (except motor vehicles) (1,035 businesses).
Onești in numbers
Where is Onești?
Population of Onești over time
Onești had 52,690 residents in 2016 and 46,776 in 2026.
| Year | Population (by registered residence) |
|---|---|
| 2021 | 49,842 |
| 2022 | 49,130 |
| 2023 | 48,527 |
| 2024 | 47,955 |
| 2025 | 47,359 |
| 2026 | 46,776 |
Did you know?
- “Existing dwellings”: higher than in 99% of localities.
- “Doctors per 1,000 inhabitants”: higher than in 97% of localities.
- “School population (children, pupils and students) per 1,000 inhabitants”: higher than in 96% of localities.
- Its area is roughly equal to 7,349 football pitches.
- Its population density is 9.8 times the national average.
- The nearest locality is Buciumi, 5.7 km away.
- The nearest more populous locality is Bacău (182,980 residents), 39 km away.
All indicators for Onești
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 | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| People settling in the municipality per 1,000 inhabitants (2025) | 14.6 ‰ | 15.1 ‰ | 16.0 ‰ | ranked 1,926 of 3,163 | |
| People leaving the municipality per 1,000 inhabitants (2025) | 21.2 ‰ | 20.9 ‰ | 17.3 ‰ | ranked 690 of 3,163 | |
| Live births per 1,000 inhabitants (2025) | 3.9 ‰ | 6.2 ‰ | 6.9 ‰ | ranked 2,887 of 3,157 | |
| Deaths per 1,000 inhabitants (2025) | 10.7 ‰ | 11.3 ‰ | 13.0 ‰ | ranked 2,295 of 3,163 |
Housing
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Length of the drinking-water network per 1,000 inhabitants (2025) | 1.95 km | 3.43 km | 7.67 km | ranked 2,614 of 2,728 | |
| Building permits for residential buildings per 1,000 inhabitants (2025) | 0.38 ‰ | 1.28 ‰ | 1.53 ‰ | ranked 2,266 of 2,438 | |
| Existing dwellings (2025) | 22,884 | 296,898 | 10,177,161 | ranked 48 of 3,181 | |
| Dwellings per 1,000 inhabitants (2025) | 489.2 ‰ | 421.9 ‰ | 484.8 ‰ | ranked 1,531 of 3,163 | |
| Average living floor area per dwelling (m²) (2025) | 42.7 m² | 49.1 m² | 50.3 m² | ranked 2,473 of 3,163 | |
| Dwellings completed in the year per 1,000 inhabitants (2025) | 0.45 ‰ | 1.56 ‰ | 1.30 ‰ | ranked 1,600 of 1,926 |
Energy
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Length of the gas distribution network per 1,000 inhabitants (2025) | 2.46 km | 3.26 km | 6.17 km | ranked 879 of 1,006 | |
| Natural gas distributed per inhabitant (m³) (2025) | 511 m³ | 5,702 m³ | 325,688 m³ | ranked 148 of 1,023 |
Economy
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Active companies in the trade register per 1,000 inhabitants (2026) | 45.4 ‰ | 34.3 ‰ | 29.4 ‰ | ranked 654 of 3,163 | |
| Companies registered in the last 12 months per 1,000 inhabitants (2026) | 2.22 ‰ | 2.10 ‰ | 2.10 ‰ | ranked 1,474 of 3,163 |
Employment
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Average number of employees per 1,000 inhabitants (2024) | 226 ‰ | 174 ‰ | 71 ‰ | ranked 336 of 3,163 | |
| Registered unemployed as a share of labour resources (working-age population) (2026) | 0.6% | 0.7% | 2.3% | ranked 2,803 of 3,163 |
Tourism
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Tourist overnight stays per inhabitant (2025) | 0.3 nights | 0.8 | 0.4 | ranked 658 of 1,250 | |
| Tourist arrivals per 1,000 inhabitants (2025) | 200 ‰ | 411 ‰ | 200 ‰ | ranked 624 of 1,250 | |
| Tourist accommodation places per 1,000 inhabitants (2025) | 10.2 ‰ | 12.8 ‰ | 11.8 ‰ | ranked 751 of 1,362 |
Environment
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Drinking water distributed per inhabitant (m³) (2025) | 40.6 m³ | 25.3 m³ | 27.2 m³ | ranked 650 of 2,656 | |
| Length of the sewer network per 1,000 inhabitants (2025) | 1.70 km | 2.07 km | 4.05 km | ranked 1,393 of 1,695 |
Health
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| Doctors per 1,000 inhabitants (2024) | 3.93 ‰ | 1.61 ‰ | 0.52 ‰ | ranked 81 of 2,833 | |
| Family doctors per 1,000 inhabitants (2024) | 0.41 ‰ | 0.34 ‰ | 0.46 ‰ | ranked 1,714 of 2,807 | |
| Pharmacists per 1,000 inhabitants (2024) | 0.49 ‰ | 0.42 ‰ | 0.47 ‰ | ranked 1,035 of 2,248 |
Education
| Indicator | Onești | Bacău County | National | Position? | Rank |
|---|---|---|---|---|---|
| School population (children, pupils and students) per 1,000 inhabitants (2025) | 192 ‰ | 135 ‰ | 91 ‰ | ranked 141 of 3,158 | |
| Education units per 10,000 inhabitants (2025) | 3.0 per 10,000 inh. | 2.5 per 10,000 inh. | 3.6 per 10,000 inh. | ranked 1,916 of 3,122 |
Businesses by activity: Onești
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 trade1,218 · 20.6%
- Transport and storage602 · 10.2%
- Administrative and support services562 · 9.5%
- Manufacturing551 · 9.3%
- Professional, scientific and technical514 · 8.7%
- Construction396 · 6.7%
- Other service activities360 · 6.1%
- Accommodation and food services349 · 5.9%
Most common activities
- Retail trade (except motor vehicles)1,035 · 17.5%
- Wholesale trade (except motor vehicles)601 · 10.2%
- Land transport and transport via pipelines472 · 8.0%
- Warehousing and transport support activities381 · 6.4%
- Specialised construction activities360 · 6.1%
- Office administration and business support activities322 · 5.4%
- Food and beverage service activities317 · 5.4%
- Real estate activities315 · 5.3%
- Construction of buildings265 · 4.5%
- Other professional, scientific and technical activities245 · 4.1%
Frequently asked questions
What is the population of Onești?
Onești has 46,776 residents (2026), ranking 48 of 3,181 localities.
How big is Onești?
Onești covers 52.5 km², with a density of 892 people per km².
Is the population of Onești growing?
Between 2016 and 2026, the population of Onești went from 52,690 to 46,776, a change of −11.2%.
Where is Onești?
Onești is in Bacău County. Latitude 46.250, longitude 26.767.
Existing dwellings: what is the figure for Onești?
In Onești, “Existing dwellings” stands at 22,884 (2025), ranking 48 of 3,181 localities; the national median is 1,464.
Doctors per 1,000 inhabitants: what is the figure for Onești?
In Onești, “Doctors per 1,000 inhabitants” stands at 3.93 ‰ (2024), ranking 81 of 2,833 localities; the national median is 0.52 ‰.
Which localities border Onești?
The nearest to Onești are Buciumi (5.7 km), Cașin (5.7 km), Bogdănești (7.4 km), Târgu Trotuș (7.9 km), Gura Văii (8.7 km).