Montgomery -- U.S. County in Tennessee Population (2000): 134768 Housing Units (2000): 52167 Land area (2000): 539.277304 sq. miles (1396.721745 sq. km) Water area (2000): 4.567362 sq. miles (11.829413 sq. km) Total area (2000): 543.844666 sq. miles (1408.551158 sq. km) Located within: Tennessee (TN), FIPS 47 Location: 36.510616 N, 87.370428 W Headwords: Montgomery Montgomery, TN Montgomery County Montgomery County, TN