| City : | Petersburg City |
| County : | Menard County, Montgomery County |
| State : | Illinois (IL) |
| | |
| Land Area : | 1.46 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 40.0138271 |
| Longitude : | -89.8476209 |
| | |
| Population (2010): | 2,260 |
| Population Estimate (2012) : | 2,234 |
| Population Density : | 1,550.65/sq mi |
| Housing Units (2012) : | 1,076 |
| Median Household Income (2012) : | $41,591 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $57,143 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $96,400 (Illinois : $190,800, USA : $181,400) |