Dyer -- U.S. County in Tennessee Population (2000): 37279 Housing Units (2000): 16123 Land area (2000): 510.495360 sq. miles (1322.176856 sq. km) Water area (2000): 15.984283 sq. miles (41.399101 sq. km) Total area (2000): 526.479643 sq. miles (1363.575957 sq. km) Located within: Tennessee (TN), FIPS 47 Location: 36.060464 N, 89.358984 W Headwords: Dyer Dyer, TN Dyer County Dyer County, TN