Ostrów Mazowiecka was created in 1434.
Leon Trystan was born in 1901, in Ostrw Mazowiecka, Poland, Russian Empire [now Ostrw Mazowiecka, Mazowieckie, Poland].
Marek Sobocinski was born on October 26, 1962, in Ostrw Mazowiecka, Mazowieckie, Poland.
Krystyna Sienkiewicz was born on February 14, 1935, in Ostrw Mazowiecka, Mazowieckie, Poland.
Andrzej Twerdochlib was born on April 21, 1936, in Ostrw Mazowiecka, Mazowieckie, Poland.
Wojciech Dmochowski was born on March 4, 1967, in Ostrw Mazowiecka, Mazowieckie, Poland.
Mazowiecka Cavalry Brigade was created in 1937.
Rawa Mazowiecka's population is 17,643.
The population of Ostrów Mazowiecka is 22,560.
The population of Ostrów Mazowiecka County is 75,073.
The population of Gmina Ostrów Mazowiecka is 12,654.
The area of Rawa Mazowiecka is 13.67 square kilometers.
The population of Gmina Rawa Mazowiecka is 8,573.