Józefów (Polish pronunciation: [juˈzɛfuf]) is a village in east-central Poland, located in Masovian Voivodeship, in Otwock County, in the Warsaw metropolitan area. Located on a picturesque confluence of Vistula and Świder rivers, it is home to one landscape reserve and three natural reservation zones. As of 2006 it had 18,157 inhabitants.
The town's is known for its abundance of historic houses and villas in the unique local Świdermajer style.
Otwock County (Polish: powiat otwocki) is a unit of territorial administration and local government (powiat) in Masovian Voivodeship, east-central Poland. It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998. Its administrative seat and largest town is Otwock, which lies 22 kilometres (14 mi) south-east of Warsaw. The county also contains the towns of Józefów, lying 3 km (2 mi) north-west of Otwock, and Karczew, 4 km (2 mi) south of Otwock.
The county covers an area of 615.09 square kilometres (237.5 sq mi). As of 2019 its total population is 124,241, out of which the population of Otwock is 44,827, that of Józefów is 20,698, that of Karczew is 9,856, and the rural population is 48,860.
Świdermajer (pronounced [ɕfidɛrˈmajɛr]) is a distinct Polish architectural style developed in late 19th and early 20th century in Masovia along the railroad linking Warsaw with Otwock. The style was applied almost exclusively to wooden villas of the middle classes. The buildings are located in right-bank Warsaw, Józefów and Otwock.