- Location: Williamson County, Illinois
- Legal status: Village
- Population: 575 (Change since 1990: -4.5%)
- Name origin: Pittsburgh, Pennsylvania
- Located northeast of Marion
- Latitude: 37°46'37" N (+37.7769)
- Longitude: 88°50'58" W (-88.8494)
- Elevation: 466 feet above sea level
- Public Land Survey: T. 8 S., R. 3 E.
- Civil township: Lake Creek
- Land area: 2.1 square miles
- Water area: 0.03 square miles (17.5 acres)
As the crow flies, Pittsburg is...
Name origin
Named for Pittsburgh, Pennsylvania
| Year | Population | Percent change |
|---|
| 1990 | 602 | -- |
| 2000 | 575 | -4.5% |