Wolsztyn County is a unit of territorial administration and local government in Greater Poland Voivodeship, west-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 only town is Wolsztyn, which lies 63 kilometres south-west of the regional capital Poznań. The county covers an area of 680.03 square kilometres.