Tishomingo County, Mississippi

County of Tishomingo
Tishomingo County Courthouse in Iuka
Location within the U.S. state of Mississippi
Coordinates: 34°44′25.6″N 88°14′21.6″W / 34.740444°N 88.239333°W / 34.740444; -88.239333
Country United States
State Mississippi
FoundedFebruary 9, 1836 (1836-02-09)
Named afterTishomingo
SeatIuka
Largest cityIuka
Area
 • Total
445 sq mi (1,150 km2)
 • Land424 sq mi (1,100 km2)
 • Water20 sq mi (52 km2)  4.6%
Population
 (2020)
 • Total
18,850
 • Estimate 
(2024)
18,553
 • Density44.5/sq mi (17.2/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district1st
Websiteco.tishomingo.ms.us

Tishomingo County is a county located in the northeastern corner of the U.S. state of Mississippi. As of the 2020 census, the population was 18,850. Its county seat is Iuka.