Poznań County (Polish: powiat poznański) is a unit of territorial administration and local government (powiat) 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 is the city of Poznań, although the city is not part of the county (it constitutes a separate city county). The county's administrative offices (starostwo powiatowe) are in the Jeżyce neighbourhood of Poznań.
Poznań County contains 10 towns: Swarzędz, 11 km (7 mi) east of (central) Poznań, Luboń, 8 km (5 mi) south of Poznań, Mosina, 18 km (11 mi) south of Poznań, Murowana Goślina, 20 km (12 mi) north of Poznań, Puszczykowo, 14 km (9 mi) south of Poznań, Kostrzyn, 21 km (13 mi) east of Poznań, Pobiedziska, 27 km (17 mi) north-east of Poznań, Kórnik, 22 km (14 mi) south-east of Poznań, Buk, 28 km (17 mi) west of Poznań, and Stęszew, 21 km (13 mi) south-west of Poznań.
The county covers an area of 1,899.61 square kilometres (733.4 sq mi). As of 2012 its total population is 341.357, out of which the urban population is 132,048 (Swarzędz 29,894, Luboń 26,935, Mosina 12,150, Murowana Goślina 10,140, Puszczykowo 9,311, Kostrzyn 8,539, Pobiedziska 8,329, Kórnik 6,981, Buk 6,181, Stęszew 5,339), and the rural population is 209,309.
Apart from the city of Poznań, Poznań County is also bordered by Oborniki County and Wągrowiec County to the north, Gniezno County and Września County to the east, Środa Wielkopolska County to the south-east, Śrem County and Kościan County to the south, Grodzisk Wielkopolski County and Nowy Tomyśl County to the west, and Szamotuły County to the north-west.
The county is subdivided into 17 gminas (two urban, eight urban-rural and seven rural). These are listed in the following table, in descending order of population.