Ostrołęka Voivodeship

The Ostrołęka Voivodeship (Polish województwo ostrołęckie ) was a Polish administrative unit from 1975 to 1998 , which became part of today's Masovian Voivodeship as part of an administrative reform . The capital was Ostrołęka .

Important cities were (population from 1995):

• Ostrołęka (53,700)
• Wyszków (25,300)
• Ostrów Mazowiecka (22,000)