Dayton, TN -- U.S. city in Tennessee Population (2000): 6180 Housing Units (2000): 2492 Land area (2000): 6.131293 sq. miles (15.879974 sq. km) Water area (2000): 0.232173 sq. miles (0.601325 sq. km) Total area (2000): 6.363466 sq. miles (16.481299 sq. km) FIPS code: 19700 Located within: Tennessee (TN), FIPS 47 Location: 35.492840 N, 85.013000 W ZIP Codes (1990): 37321 Note: some ZIP codes may be omitted esp. for suburbs. Headwords: Dayton, TN Dayton