Harmon County, Oklahoma

Harmon County
Harmon County Courthouse in January 2015
Location within the U.S. state of Oklahoma
Oklahoma's location within the U.S.
Coordinates: 34°44′N 99°50′W / 34.74°N 99.84°W / 34.74; -99.84
Country United States
State Oklahoma
Founded1909
SeatHollis
Largest cityHollis
Area
  Total
539 sq mi (1,400 km2)
  Land537 sq mi (1,390 km2)
  Water1.5 sq mi (4 km2)  0.3%
Population
 (2020)
  Total
2,488
  Density4.6/sq mi (1.8/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district3rd

Harmon County is a county in the southwest corner of the U.S. state of Oklahoma. As of the 2020 Census, the population was 2,488, making it the second-least populous county in Oklahoma, behind only Cimarron County. It has lost population in every census since 1930. The county seat is Hollis.