Jarocin County () 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 and largest town is Jarocin, which lies south-east of the regional capital Poznaà Â. The only other town in the county is à »erków, lying north of Jarocin.
The county covers an area of . As of 2006 its total population is 70,390, out of which the population of Jarocin is 25,834, that of à »erków is 2,058, and the rural population is 42,498.
Jarocin County is bordered by à Âroda County and Wrzeà Ânia County to the north, Pleszew County to the east, Krotoszyn County to the south, and Gostyà  County and à Ârem County to the west.
The county is subdivided into four gminas (two urban-rural and two rural). These are listed in the following table, in descending order of population.
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