Neosho -- U.S. County in Kansas Population (2000): 16997 Housing Units (2000): 7461 Land area (2000): 571.748021 sq. miles (1480.820514 sq. km) Water area (2000): 6.272948 sq. miles (16.246860 sq. km) Total area (2000): 578.020969 sq. miles (1497.067374 sq. km) Located within: Kansas (KS), FIPS 20 Location: 37.591458 N, 95.351726 W Headwords: Neosho Neosho, KS Neosho County Neosho County, KS