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Działdowo (IPA: [ʥawˈdɔvɔ]) is a town in north-central Poland with 24,830 inhabitants (2006), the capital of Działdowo County. Situated in the Warmian-Masurian Voivodeship (since 1999), Działdowo previously belonged to Ciechanów Voivodeship (1975-1998).