Wejherowo County (Polish: powiat wejherowski) is a unit of territorial administration and local government (powiat) in Pomeranian Voivodeship, northern Poland, on the Baltic coast. 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 Wejherowo, which lies 36 kilometres (22 mi) north-west of the regional capital Gdańsk. The county also contains the towns of Rumia, lying 11 km (7 mi) east of Wejherowo, and Reda, 7 km (4 mi) east of Wejherowo. Rumia, Reda and Wejherowo are contiguous, and are referred to as the Kashubian Tricity, an allusion to the larger Tricity area centred on Gdańsk.
The county covers an area of 1,279.84 square kilometres (494.1 sq mi). As of 2006 its total population is 181,834, out of which the population of Wejherowo is 45,170, that of Rumia is 44,497, that of Reda is 18,509, and the rural population is 73,658.
Wejherowo County on a map of the counties of Pomeranian Voivodeship
Wejherowo County is bordered by Puck County to the north-east, the city of Gdynia to the east, Kartuzy County to the south and Lębork County to the west. It also borders the Baltic Sea to the north.