Knox County, Missouri

Knox County
Knox County Courthouse in Edina
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 40°07′N 92°09′W / 40.12°N 92.15°W / 40.12; -92.15
Country United States
State Missouri
FoundedFebruary 14, 1845
Named afterHenry Knox
SeatEdina
Largest cityEdina
Area
  Total
507 sq mi (1,310 km2)
  Land504 sq mi (1,310 km2)
  Water2.8 sq mi (7 km2)  0.6%
Population
 (2020)
  Total
3,744
  Estimate 
(2024)
3,740
  Density7.4/sq mi (2.9/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district6th
Websitewww.knoxcountymo.org

Knox County is a county located in the northeast portion of the U.S. state of Missouri. As of the 2020 census, its population was 3,744, making it the third-least populous county in Missouri. Its county seat is Edina. The county was organized February 14, 1845, and named for U.S. Secretary of War General Henry Knox.