Pulaski County, Illinois

Pulaski County
Location within the U.S. state of Illinois
Illinois's location within the U.S.
Coordinates: 37°14′N 89°08′W / 37.23°N 89.13°W / 37.23; -89.13
Country United States
State Illinois
Founded1843
Named afterCasimir Pulaski
SeatMound City
Largest cityMounds
Area
  Total
203 sq mi (530 km2)
  Land199 sq mi (520 km2)
  Water4.0 sq mi (10 km2)  2.0%
Population
 (2020)
  Total
5,193
  Estimate 
(2023)
4,911
  Density26/sq mi (9.9/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district12th
Websitewww.pulaskicountyil.net

Pulaski County is a county located in the U.S. state of Illinois. According to the 2020 census, it had a population of 5,193. Its county seat is Mound City. Its largest city is Mounds. It is located along the Ohio River in the southwestern portion of the state, known locally as "Little Egypt".