Franklin -- U.S. County in Idaho Population (2000): 11329 Housing Units (2000): 3872 Land area (2000): 665.433726 sq. miles (1723.465364 sq. km) Water area (2000): 2.922903 sq. miles (7.570284 sq. km) Total area (2000): 668.356629 sq. miles (1731.035648 sq. km) Located within: Idaho (ID), FIPS 16 Location: 42.153211 N, 111.855585 W Headwords: Franklin Franklin, ID Franklin County Franklin County, ID