Madison County, Idaho

Madison County
Madison County Courthouse
Location within the U.S. state of Idaho
Idaho's location within the U.S.
Coordinates: 43°47′N 111°40′W / 43.79°N 111.66°W / 43.79; -111.66
Country United States
State Idaho
FoundedFebruary 18, 1913
Named afterJames Madison
SeatRexburg
Largest cityRexburg
Area
  Total
473 sq mi (1,230 km2)
  Land469 sq mi (1,210 km2)
  Water4.0 sq mi (10 km2)  0.8%
Population
 (2020)
  Total
52,913
  Estimate 
(2024)
55,549
  Density110/sq mi (43/km2)
Time zoneUTC−7 (Mountain)
  Summer (DST)UTC−6 (MDT)
Congressional district2nd
Websitewww.co.madison.id.us

Madison County is a county located in the U.S. state of Idaho. As of the 2020 census, the population was 52,913. The county seat and largest city is Rexburg. Madison County is part of the Rexburg, Idaho micropolitan area, which is also included in the Idaho Falls-Rexburg-Blackfoot Combined Statistical Area.