Massac County, Illinois

Massac County
Massac County Courthouse in Metropolis
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 37°13′N 88°43′W / 37.22°N 88.71°W / 37.22; -88.71
Country United States
State Illinois
FoundedFebruary 8, 1843
SeatMetropolis
Largest cityMetropolis
Area
  Total
242 sq mi (630 km2)
  Land237 sq mi (610 km2)
  Water4.6 sq mi (12 km2)  1.9%
Population
 (2020)
  Total
14,169
  Density59/sq mi (23/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district12th

Massac County is a county in the U.S. state of Illinois. According to the 2020 census, it had a population of 14,169. Established in 1843 and named for a French fort founded in the 18th century, its county seat is Metropolis. Massac County is included in the Paducah, KY-IL Metropolitan Statistical Area. It is located along the Ohio River, in the portion of the state known locally as "Little Egypt".