Grayson County, Texas

Grayson County
The Grayson County Courthouse in Sherman
Location within the U.S. state of Texas
Texas's location within the U.S.
Coordinates: 33°37′N 96°41′W / 33.62°N 96.68°W / 33.62; -96.68
Country United States
State Texas
Founded1846
Named afterPeter Wagener Grayson
SeatSherman
Largest citySherman
Area
  Total
979 sq mi (2,540 km2)
  Land933 sq mi (2,420 km2)
  Water46 sq mi (120 km2)  4.7%
Population
 (2020)
  Total
135,543
  Density140/sq mi (53/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitewww.co.grayson.tx.us

Grayson County is a county in the U.S. state of Texas. As of the 2020 census, its population was 135,543. The county seat is Sherman. The county was founded in 1846 and is named after Peter Wagener Grayson, an attorney general of the Republic of Texas. Grayson County is included in the Sherman-Denison metropolitan statistical area, which is also included in the Dallas-Fort Worth-Arlington, combined statistical area. Located on the state's border with Oklahoma, it is part of the Texoma region, with proximity to Lake Texoma and the Red River.