The Ostrołęka County is situated in the north-eastern part of Poland and it is the largest county in the Mazowieckie Province. It adjoins the Warmińsko-Mazurskie and Podlaskie Provinces. The area of the county is 2099sqm. It's inhabited by 84 thousand people (with the town of Ostrołęka town county - 140 thousand). It consists of 11 districts: Baranowo, Czarnia, Czerwin, Goworowo, Kadzidło, Lelis, Łyse, Myszyniec (town and village district), Olszewo-Borki, Rzekuń and Troszyn, there are 306 localities within these districts. In the central part of the county the town of Ostrołęka is situated - it received the county rights and was appointed to be the seat of the district. 55 thousand people live here. The Density of population in the Ostrołęka county is 40 persons per 1sqm. The county is situated in the area which is a part of three geographical regions: Kurpiowske Plain (northern part of the county), the Valley of the Low Narew River (central) and Międzyrzecze Łomżynskie (southern). One of the most interesting ethnographical regions in Poland - Kurpie is located on the Kurpiowska Plain. The Kurpie Forest known also as Zielona (Green), Myszyniecka or Zagajnica grows there. The Kurpiowska Plain is not very fertile as it is; covered by outwash (post-glacial sands) with island of dunes on which forests grow. Lowlands are occupied by meadows and pasture lands. The absolute heights at which the county is situated vary from 87m above the sea level in the Valley of the Low Narew River (Goworowo district) to 158m above the sea level on the Kurpiowska Plain (environs of Czarnia). As far as the climate is concerned, the county belongs to the so called eastern province which is colder than the central one, to which the western part of Mazovia belongs.An Average annual temperature in Ostrołęka is 6,6 Celsius degrees. The first autumn ground frost falls here on the first days of October and the last ones on the first days of May. Snow disappears after 80-90 days, a month later than in West Mazovia. The number of cloudy days floctuates here between 150 and 170. Rainfalls are rather heavy amounting to 550-650mm per year. The Narew is the main river flowing through the Ostrołęka county. It is a lowland river with numerous meanders and with rugged banks. In the southern part of the county flows a small tributary of the Narew River - the Orz. In the Kurpie part of the county there are several smaller rivers, e.g.the Omulew, Rozoga, Szkwa. These rivers rise in the Mazurian lakes and flow parallel to each other in irregular depressions of post glacial rivers. Waters of all rivers flow into the Narew.

Distances from Ostrołęka
To the nearest bigger towns:
Warszawa 115km
Bialystok 115km
Olsztyn 125km
Gdansk 290km

To the nearest checkpoints:
Bezledy (Russia) 180km
Ogrodniki (Lithuania) 215km
Budzisko (Lithuania) 215km
Kuznica Bialostocka
(Belarussia) 170km
Bobrowniki
(Belarussia) 165km

To some chosen towns beyond the Polish borders:
Berlin (Germany) 700km
Brussels (Belgium) 1400km
Geneva (Switzerland) 1600km
Grodno (Belarussia) 205km
Kaliningrad (Russia) 250km
London(GB) 1700km
Minsk (Belarussia) 480km
Moscow (Russia) 1400km
Paris (France) 1730km
Prague (Chek Rep.) 745km
Rome (Italy) 1950km
Vilnius (Lithuania) 370km