Jasper County, Illinois

Jasper County
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 39°01′N 88°09′W / 39.01°N 88.15°W / 39.01; -88.15
Country United States
State Illinois
Founded1831
Named afterWilliam Jasper
SeatNewton
Largest cityNewton
Area
  Total
498 sq mi (1,290 km2)
  Land495 sq mi (1,280 km2)
  Water3.6 sq mi (9 km2)  0.7%
Population
 (2020)
  Total
9,287
  Estimate 
(2023)
9,144
  Density19/sq mi (7.2/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district12th
Websitehttps://jaspercountyillinois.gov/

Jasper County is a county located in the U.S. state of Illinois. According to the 2020 census, it has a population of 9,287. Its county seat is Newton.