Delaware County, Oklahoma

Delaware County
Delaware County Courthouse
Location within the U.S. state of Oklahoma
Oklahoma's location within the U.S.
Coordinates: 36°25′N 94°48′W / 36.41°N 94.8°W / 36.41; -94.8
Country United States
State Oklahoma
Founded1907
Named afterDelaware Indians
SeatJay
Largest cityGrove
Area
  Total
792 sq mi (2,050 km2)
  Land738 sq mi (1,910 km2)
  Water54 sq mi (140 km2)  6.8%
Population
 (2020)
  Total
40,397
  Density51/sq mi (20/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district2nd
Websitedelaware.okcounties.org

Delaware County is a county located in the U.S. state of Oklahoma. As of the 2020 census, its population was 40,397. Its county seat is Jay. The county was named for the Delaware Indians, who had established a village in the area prior to the Cherokees being assigned to relocate to Indian Territory in the 1830s. Delaware County was created in 1907. Prior to becoming Delaware County, a large portion of the area was known as the Delaware District of the Cherokee Nation. Today, Delaware County continues to be recognized by the Cherokee Nation as the Delaware District.