Monroe County, Indiana

Monroe County
Monroe County courthouse in Bloomington, Indiana
Location within the U.S. state of Indiana
Indiana's location within the U.S.
Coordinates: 39°10′N 86°31′W / 39.16°N 86.52°W / 39.16; -86.52
Country United States
State Indiana
FoundedJanuary 14, 1818
Named afterJames Monroe
SeatBloomington
Largest cityBloomington
Area
  Total
411.32 sq mi (1,065.3 km2)
  Land394.51 sq mi (1,021.8 km2)
  Water16.81 sq mi (43.5 km2)  4.09%
Population
 (2020)
  Total
139,718
  Estimate 
(2023)
139,342
  Density340/sq mi (130/km2)
Time zoneUTC−5 (Eastern)
  Summer (DST)UTC−4 (EDT)
Congressional district9th
Websitewww.co.monroe.in.us
Indiana county number 53

Monroe County is a county in the U.S. state of Indiana. In 1910 the US Census Bureau calculated the nation's mean population center to lie in Monroe County. The population was 139,718 at the 2020 United States census. The county seat is Bloomington. Monroe County is part of the Bloomington, Indiana, Metropolitan Statistical Area.