Żyrardów County

Żyrardów County (powiat żyrardowski) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on 1 January 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Żyrardów, which lies 43 km south-west of Warsaw. The only other town in the county is Mszczonów, lying 11 km south-east of Żyrardów.

The county covers an area of 532.63 km2. As of 2022 its total population is 75,414, out of which the population of Żyrardów is 38,784, that of Mszczonów is 6,159, that of Wiskitki is 1,421, and the rural population is 29,050.

Neighbouring counties
Żyrardów County is bordered by Grodzisk Mazowiecki County to the east, Grójec County to the south-east, Rawa County to the south, Skierniewice County to the west and Sochaczew County to the north-west.

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