Traill County, North Dakota

Traill County
The Traill County Courthouse in Hillsboro
Location within the U.S. state of North Dakota
North Dakota's location within the U.S.
Coordinates: 47°26′47″N 97°09′53″W / 47.446271°N 97.164636°W / 47.446271; -97.164636
Country United States
State North Dakota
FoundedJanuary 12, 1875 (created)
February 23, 1875 (organized)
Named afterWalter John Strickland Traill
SeatHillsboro
Largest cityMayville
Area
  Total
862.436 sq mi (2,233.70 km2)
  Land861.871 sq mi (2,232.24 km2)
  Water0.565 sq mi (1.46 km2)  0.07%
Population
 (2020)
  Total
7,997
  Estimate 
(2024)
7,989 
  Density9.269/sq mi (3.579/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Area code701
Congressional districtAt-large
Websiteco.traill.nd.us

Traill County is a county in the U.S. state of North Dakota. As of the 2020 census, the population at 7,997, and was estimated to be 7,989 in 2024. The county seat is Hillsboro and the largest city is Mayville.