Ostrołęka poviat - poviat in Poland, in Mazowieckie voivodship, created in 1999 as part of an administrative reform. His seat is Ostrołęka.
An administrative division
The poviat consists of:
urban-rural communes: Myszyniec rural communes: Baranowo, Czarnia (the smallest), Czerwin, Goworowo, Kadzidło (the largest), Lelis, Łyse, Olszewo-Borki, Rzekuń, Troszyn towns: Myszyniec
Neighboring poviats:
Ostrów County, Wyszków County, Maków County, Przasnyski County, Szczycień County (Warmińsko-Mazurskie) County, Piski (Warmińsko-Mazurskie) County, Kolno County (Podlaskie Province) Łomża County (Podlasie Province)