Montgomery -- U.S. County in Indiana Population (2000): 37629 Housing Units (2000): 15678 Land area (2000): 504.511307 sq. miles (1306.678230 sq. km) Water area (2000): 0.826376 sq. miles (2.140304 sq. km) Total area (2000): 505.337683 sq. miles (1308.818534 sq. km) Located within: Indiana (IN), FIPS 18 Location: 40.032010 N, 86.887139 W Headwords: Montgomery Montgomery, IN Montgomery County Montgomery County, IN