Siedlce [] (, ) is a city in eastern Poland with 76,585 inhabitants . Situated in the Masovian Voivodeship (since 1999), previously the city was the capital of a separate Siedlce Voivodeship (1975–1998). Siedlce lies between two small rivers, the Muchawka and the Helenka, along European route E30. It is the fourth largest city of the Voivodeship, and the seat of a Roman Catholic Diocese of Siedlce. Siedlce is a local educational, cultural and business center.