Ostrów Mazowiecka

Ostrów Mazowiecka [ˈɔstruf mazɔˈvʲɛt͡ska] (listen) is a town in northeastern Poland with 23,486 inhabitants (2004). Situated in the Masovian Voivodeship (since 1999), previously in Ostrołęka Voivodeship (1975-1998). It is the capital of Ostrów Mazowiecka County.

Ostrów Mazowiecka
Town hall


Coat of arms
Ostrów Mazowiecka
Coordinates: 52°48′N 21°54′E
Country Poland
CountyOstrów Mazowiecka County
GminaOstrów Mazowiecka (urban gmina)
Established15th century
Town rights1434
  MayorJerzy Bauer
  Total22.09 km2 (8.53 sq mi)
110 m (360 ft)
  Density1,000/km2 (2,700/sq mi)
Time zoneUTC+1 (CET)
  Summer (DST)UTC+2 (CEST)
Postal code
07-300, 07-302
Area code(s)+48 029
Car platesWOR


According to the 1897 census, 5,660 inhabitants out of 10,471 were Jews.[2] On 9 November 1939, one of the German soldiers set fire to the buildings on 3-ego Maja Street. The German authorities accused the Jews of starting the fire. On 11 November (though according to other sources, on 10 November) 500–800 Jews were killed[3]

International relations

Twin towns – Sister cities

Ostrów Mazowiecka is twinned with:

Notable people


  1. Demographic Yearbook of Poland 2014 Archived 2016-07-09 at the Wayback Machine
  2. "Archived copy". Archived from the original on 2016-05-05. Retrieved 2016-05-06.CS1 maint: archived copy as title (link)
  3. "Archived copy". Archived from the original on 2016-06-02. Retrieved 2016-05-06.CS1 maint: archived copy as title (link)

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