Knox County, Missouri

Knox County, Missouri
Knox County Courthouse in Edina
Location within the U.S. state of Missouri
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 (7.3 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.