Petersburg, Illinois

Petersburg, Illinois
Interactive map of Petersburg, Illinois
Petersburg
Petersburg
Coordinates: 40°00′51″N 89°50′43″W / 40.01417°N 89.84528°W / 40.01417; -89.84528
CountryUnited States
StateIllinois
CountyMenard
Founded1833
Area
 • Total
1.56 sq mi (4.05 km2)
 • Land1.56 sq mi (4.05 km2)
 • Water0 sq mi (0.00 km2)
Elevation
499 ft (152 m)
Population
 (2020)
 • Total
2,258
 • Density1,445.4/sq mi (558.08/km2)
Time zoneUTC−6 (CST)
 • Summer (DST)UTC−5 (CDT)
ZIP code
62675
Area code217
FIPS code17-59312
GNIS feature ID2396193
Websitewww.petersburgil.org

Petersburg is a city in and the county seat of Menard County, Illinois, United States, on the bluffs and part of the floodplain overlooking the Sangamon River. It is part of the Springfield, Illinois metropolitan area. The population was 2,258 at the 2020 census, nearly unchanged from 2010. Petersburg is located approximately 2 miles (3 km) north of New Salem, the original location where Abraham Lincoln first settled, as he started his career.