Johnson County, Nebraska

Johnson County
Johnson County Courthouse in Tecumseh
Location within the U.S. state of Nebraska
Nebraska's location within the U.S.
Coordinates: 40°24′N 96°16′W / 40.4°N 96.27°W / 40.4; -96.27
Country United States
State Nebraska
Founded1855 (founded)
1857 (organized)
Named afterRichard Mentor Johnson
SeatTecumseh
Largest cityTecumseh
Area
  Total
377 sq mi (980 km2)
  Land376 sq mi (970 km2)
  Water0.7 sq mi (2 km2)  0.2%
Population
 (2020)
  Total
5,290
  Estimate 
(2021)
5,316
  Density14/sq mi (5.4/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district3rd
Websitejohnsoncounty.ne.gov

Johnson County is a county in the U.S. state of Nebraska. As of the 2020 United States census, the population was 5,290. Its county seat is Tecumseh. The county was formed in 1855, and was organized in 1857. It was named after Richard Mentor Johnson, who was Vice President of the United States from 1837 to 1841. In the Nebraska license plate system, Johnson County is represented by the prefix 57 (it had the fifty-seventh-largest number of vehicles registered in the county when the license plate system was established in 1922).