Węgrów County (Polish: powiat węgrowski) 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 Węgrów, which lies 73 kilometres (45 mi) east of Warsaw. The only other town in the county is Łochów, lying 26 km (16 mi) north-west of Węgrów.

The county covers an area of 1,219.18 square kilometres (470.7 sq mi). As of 2019, its total population is 66,037, out of which the population of Węgrów is 12,628, that of Łochów is 6,825, and the rural population is 46,584.

Neighbouring counties

Węgrów County is bordered by Ostrów County to the north, Sokołów County to the east, Siedlce County to the south, Mińsk County to the south-west, and Wołomin County and Wyszków County to the west.

Administrative division

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

GminaTypeArea (km2)Population (2019)Seat
Gmina Łochówurban-rural195.017,908Łochów
Węgrówurban35.512,628Węgrów
Gmina Liwrural169.67,397Węgrów *
Gmina Korytnicarural180.56,221Korytnica
Gmina Sadownerural144.75,861Sadowne
Gmina Stoczekrural144.34,967Stoczek
Gmina Grębkówrural130.84,451Grębków
Gmina Miedznarural115.83,842Miedzna
Gmina Wierzbnorural103.12,762Wierzbno
* seat not part of the gmina