Dyer County, Tennessee

Dyer County
Dyer County Courthouse in Dyersburg in 2022
Location within the U.S. state of Tennessee
Tennessee's location within the U.S.
Coordinates: 36°04′N 89°25′W / 36.06°N 89.41°W / 36.06; -89.41
Country United States
State Tennessee
Founded1823
Named afterRobert Henry Dyer, state legislator
SeatDyersburg
Largest cityDyersburg
Government
  County MayorDavid Quick
Area
  Total
527 sq mi (1,360 km2)
  Land512 sq mi (1,330 km2)
  Water14 sq mi (40 km2)  2.7%
Population
 (2020)
  Total
36,801
  Density75/sq mi (29/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district8th
Websitedyercounty.com

Dyer County is a county located in the westernmost part of the U.S. state of Tennessee. As of the 2020 census, the population was 36,801. The county seat is Dyersburg. Dyer County comprises the Dyersburg, TN Micropolitan Statistical Area.