what county is.batavia in
Batavia, New York. Batavia is a city in Genesee County, Western New York, US, near the center of Genesee County, surrounded by the Town of Batavia, which is a separate municipality. Its population as of the 2010 census was 15,465. The name Batavia is Latin for the Betuwe region of the Netherlands, and honors early Dutch land developers.