Ostrów County, Masovian Voivodeship

Ostrów Mazowiecka County (Polish: powiat ostrowski) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Ostrów Mazowiecka, which lies 89 kilometres (55 mi) north-east of Warsaw. The only other town in the county is Brok, lying 12 km (7 mi) south of Ostrów Mazowiecka.

Ostrów Mazowiecka County
Powiat ostrowski
Flag of Ostrów Mazowiecka County
Coat of arms of Ostrów Mazowiecka County
Location within the voivodeship
Location within the voivodeship
Division into gminas
Division into gminas
Coordinates (Ostrów Mazowiecka): 52°48′N 21°54′E / 52.800°N 21.900°E / 52.800; 21.900Coordinates: 52°48′N 21°54′E / 52.800°N 21.900°E / 52.800; 21.900
Country Poland
SeatOstrów Mazowiecka
 • Total1,218.06 km2 (470.30 sq mi)
 • Total72,558
 • Density60/km2 (150/sq mi)
 • Urban
 • Rural
Car platesWOR

The county covers an area of 1,218.06 square kilometres (470.3 sq mi). As of 2019 its total population is 72,558, out of which the population of Ostrów Mazowiecka is 22,489, that of Brok is 1,941, and the rural population is 48,128.[1]

Neighbouring countiesEdit

Ostrów Mazowiecka County is bordered by Łomża County to the north, Zambrów County to the north-east, Wysokie Mazowieckie County to the east, Sokołów County and Węgrów County to the south, Wyszków County to the south-west, and Ostrołęka County to the north-west.

Administrative divisionEdit

The county is subdivided into 11 gminas (one urban, one urban-rural and nine rural). These are listed in the following table, in descending order of population.

Gmina Type Area
Ostrów Mazowiecka urban 22.1 22,489  
Gmina Ostrów Mazowiecka rural 283.7 12,885 Ostrów Mazowiecka *
Gmina Małkinia Górna rural 134.1 11,617 Małkinia Górna
Gmina Wąsewo rural 119.2 4,317 Wąsewo
Gmina Andrzejewo rural 118.6 4,094 Andrzejewo
Gmina Stary Lubotyń rural 109.2 3,724 Stary Lubotyń
Gmina Zaręby Kościelne rural 88.9 3,660 Zaręby Kościelne
Gmina Brok urban-rural 110.2 2,840 Brok
Gmina Nur rural 102.9 2,670 Nur
Gmina Boguty-Pianki rural 89.1 2,594 Boguty-Pianki
Gmina Szulborze Wielkie rural 46.7 1,668 Szulborze Wielkie
* seat not part of the gmina


  1. ^ GUS. "Population. Size and structure and vital statistics in Poland by territorial division in 2019. As of 30th June". stat.gov.pl. Retrieved 2020-09-14.