Location map: Oncești (Bacău County)
Locality · Bacău County

Oncești (Bacău County): population and statistics

Oncești has a population of 1,509 (2026) across 47.5 km², or 31.7 people per km². It ranks 2,722 of 3,181 localities by population. Its population is falling: −9.6% between 2016 and 2026.

  • 1,509 residents
  • 47.5 km²
  • 32 people/km²

Key points

Among the 93 localities in Bacău County, Oncești ranks No. 92 by population.

Pharmacists per 1,000 inhabitants: 0.00 ‰ in Oncești, compared with an average of 0.42 ‰ in Bacău County and 1.08 ‰ nationally.

Average living floor area per dwelling (m²): 36.7 m² in Oncești, compared with an average of 49.1 m² in Bacău County and 51.1 m² nationally.

Oncești: the most common activity among active businesses is Retail trade (except motor vehicles) (20 businesses).

Oncești in numbers

Population (by registered residence)
1,509
ranked 2,722 of 3,181
−9.6%over 10 years
2016–2026
Population density
32people/km²
ranked 2,317 of 3,163
Area
47.5km²
ranked 2,156 of 3,181
Pharmacists per 1,000 inhabitants
0.00‰
ranked 2,127 of 2,248
Average living floor area per dwelling (m²)
36.7m²
ranked 2,937 of 3,163
Registered unemployed as a share of labour resources (working-age population)
0.6%
ranked 2,803 of 3,163
Companies registered in the last 12 months per 1,000 inhabitants
0.66‰
ranked 2,807 of 3,163

Where is Oncești?

Population of Oncești over time

1,5001,5501,6001,6501,700201620182020202220242026
Population, 2016–2026

Oncești had 1,670 residents in 2016 and 1,509 in 2026.

YearPopulation (by registered residence)
20211,572
20221,560
20231,532
20241,535
20251,515
20261,509

Did you know?

All indicators for Oncești

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.

OnceștiNational medianHover over or tap a bar to see what it shows.

Population

IndicatorOnceștiBacău CountyNationalPosition?Rank
People settling in the municipality per 1,000 inhabitants (2025)16.6 ‰15.1 ‰16.0 ‰ranked 1,450 of 3,163
People leaving the municipality per 1,000 inhabitants (2025)19.2 ‰20.9 ‰17.3 ‰ranked 1,087 of 3,163
Live births per 1,000 inhabitants (2025)8.6 ‰6.2 ‰6.9 ‰ranked 844 of 3,157
Deaths per 1,000 inhabitants (2025)10.6 ‰11.3 ‰13.0 ‰ranked 2,324 of 3,163

Housing

IndicatorOnceștiBacău CountyNationalPosition?Rank
Existing dwellings (2025)740296,89810,177,161ranked 2,880 of 3,181
Dwellings per 1,000 inhabitants (2025)490.4 ‰421.9 ‰484.8 ‰ranked 1,517 of 3,163
Average living floor area per dwelling (m²) (2025)36.7 m²49.1 m²50.3 m²ranked 2,937 of 3,163
Dwellings completed in the year per 1,000 inhabitants (2025)0.66 ‰1.56 ‰1.30 ‰ranked 1,399 of 1,926

Economy

IndicatorOnceștiBacău CountyNationalPosition?Rank
Active companies in the trade register per 1,000 inhabitants (2026)21.9 ‰34.3 ‰29.4 ‰ranked 2,245 of 3,163
Companies registered in the last 12 months per 1,000 inhabitants (2026)0.66 ‰2.10 ‰2.10 ‰ranked 2,807 of 3,163

Employment

IndicatorOnceștiBacău CountyNationalPosition?Rank
Average number of employees per 1,000 inhabitants (2024)50 ‰174 ‰71 ‰ranked 2,207 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

Health

IndicatorOnceștiBacău CountyNationalPosition?Rank
Doctors per 1,000 inhabitants (2024)0.66 ‰1.61 ‰0.52 ‰ranked 989 of 2,833
Family doctors per 1,000 inhabitants (2024)0.66 ‰0.34 ‰0.46 ‰ranked 571 of 2,807
Pharmacists per 1,000 inhabitants (2024)0.00 ‰0.42 ‰0.47 ‰ranked 2,127 of 2,248

Education

IndicatorOnceștiBacău CountyNationalPosition?Rank
School population (children, pupils and students) per 1,000 inhabitants (2025)97 ‰135 ‰91 ‰ranked 1,359 of 3,158
Education units per 10,000 inhabitants (2025)6.6 per 10,000 inh.2.5 per 10,000 inh.3.6 per 10,000 inh.ranked 458 of 3,122

Businesses by activity: Oncești

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

Most common activities

Frequently asked questions

What is the population of Oncești?

Oncești has 1,509 residents (2026), ranking 2,722 of 3,181 localities.

How big is Oncești?

Oncești covers 47.5 km², with a density of 32 people per km².

Is the population of Oncești growing?

Between 2016 and 2026, the population of Oncești went from 1,670 to 1,509, a change of −9.6%.

Where is Oncești?

Oncești is in Bacău County. Latitude 46.479, longitude 27.259.

Pharmacists per 1,000 inhabitants: what is the figure for Oncești?

In Oncești, “Pharmacists per 1,000 inhabitants” stands at 0.00 ‰ (2024), ranking 2,127 of 2,248 localities; the national median is 0.47 ‰.

Average living floor area per dwelling (m²): what is the figure for Oncești?

In Oncești, “Average living floor area per dwelling (m²)” stands at 36.7 m² (2025), ranking 2,937 of 3,163 localities; the national median is 50.3 m².

Which localities border Oncești?

The nearest to Oncești are Stănișești (6.5 km), Filipeni (8.4 km), Vultureni (9.0 km), Răchitoasa (9.7 km), Izvoru Berheciului (12 km).