Rhea County, Tennessee

Rhea County
Location within the U.S. state of Tennessee
Tennessee's location within the U.S.
Coordinates: 35°37′N 84°55′W / 35.61°N 84.92°W / 35.61; -84.92
Country United States
State Tennessee
Founded1807
Named afterJohn Rhea
SeatDayton
Largest cityDayton
Area
  Total
336 sq mi (870 km2)
  Land315 sq mi (820 km2)
  Water21 sq mi (50 km2)  6.3%
Population
 (2020)
  Total
32,870
  Density101/sq mi (39/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Area code423
Congressional district4th
Websiterheacountytn.org

Rhea County (/r/ RAY) is a county located in the U.S. state of Tennessee. As of the 2020 census, its population was 32,870. Its county seat is Dayton. Rhea County comprises the Dayton, TN micropolitan statistical area, which is also included in the Chattanooga–Cleveland–Dalton, TN–GA–AL Combined Statistical Area.