| Official Zip Code Name | Forest City |
| Zip Code State | Illinois |
| Primary County: | Mason |
| Area Code | 309 |
| Current Population: | 37081 |
| Racial Majority: | White 62.49% |
| Median Household Income | $55618 |
| Average Adjusted Gross Income | $89060 |
| Time Zone: | 6 |
| Elevation Range | 502 ft. |
| Area | 30.792 Sqm. |
| Coordinates(Y,X) | 40.339716, -89.819448 |