Johnson County | |
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![]() Johnson County Courthouse in Warrensburg | |
![]() Location within the U.S. state of Missouri | |
![]() Missouri's location within the U.S. | |
Coordinates: 38°45′N 93°49′W / 38.75°N 93.81°W | |
Country | ![]() |
State | ![]() |
Founded | December 13, 1833 |
Named for | Richard Mentor Johnson |
Seat | Warrensburg |
Largest city | Warrensburg |
Area | |
• Total | 833 sq mi (2,160 km2) |
• Land | 829 sq mi (2,150 km2) |
• Water | 3.9 sq mi (10 km2) 0.5% |
Population (2020) | |
• Total | 54,013 |
• Density | 65/sq mi (25/km2) |
Time zone | UTC−6 (Central) |
• Summer (DST) | UTC−5 (CDT) |
Congressional district | 4th |
Website | www |
Johnson County is a county located in western portion of the U.S. state of Missouri. As of the 2020 census, the population was 54,013.[1] Its county seat is Warrensburg.[2] The county was formed December 13, 1834, from Lafayette County and named for Vice President Richard Mentor Johnson.[3]
Johnson County comprises the Warrensburg Micropolitan Statistical Area, which is also included in the Kansas City-Overland Park-Kansas City, MO-KS Combined Statistical Area.