Ostrów Mazowiecka County

Ostrów Mazowiecka County 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 north-east of Warsaw. The only other town in the county is Brok, lying south of Ostrów Mazowiecka.