Ostrołęcki County Statistics for 2026

Latest Data

87,397

41.7 people/km²

26,228

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Territory of Ostrołęcki County 2026

Ostrołęcki county ranks 138 nationally among Poland's 380 counties by area, in the top 10% of largest counties. Covers 2,093 km² (209,355 ha). Within Masovian voivodeship, ranks 16 of 42 counties. Contains 11 municipalities.

Official GUS territorial statistics for Ostrołęcki county and its 11 municipalities within Masovian voivodeship.

Poland 313,933 km²

Voivodeship ranked 1/16 35,559 km²

County ranked 1/42 2,093 km²

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Total Area Chart

1998

26 years

2024

Powiat Ranking

7/380 County in Poland

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Year over Year

since 2023 2024

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Land Use major land categories

Nature Protection protected areas and sites

Popular Cities in Poland

Dąbrowa Górnicza

Gorzów Wielkopolski

Jastrzębie-Zdrój

Piotrków Trybunalski

Biała Podlaska

Piekary Śląskie

Siemianowice Śląskie

Świętochłowice

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Contact Information for Ostrołęcki

Starostwo Powiatowe w Ostrołęce

Pl.Gen.Józefa Bema 5

07-410 Ostrołęka

kancelaria@powiatostrolecki.pl

www.powiatostrolecki.pl

Opening Hours

Opens in 26h 27min

Monday 08:00 - 16:00

Tuesday 08:00 - 17:30

Wednesday 08:00 - 16:00

Thursday 08:00 - 16:00

Friday 08:00 - 14:30

Saturday Closed

Sunday Closed

Updated 77 days ago

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Data Source: Data from GUS Local Data Bank (BDL)