| City : | Colchester City |
| County : | Mcdonough County |
| State : | Illinois (IL) |
| Land Area : | 1.00 sq mi |
| Water Area : | 0.00 sq mi |
| Latitude : | 40.4273174 |
| Longitude : | -90.7921475 |
| Population (2010): | 1,401 |
| Population Estimate (2012) : | 1,274 |
| Population Density : | 1,403.71/sq mi |
| Housing Units (2012) : | 676 |
| Median Household Income (2012) : | $37,979 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $46,250 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $61,400 (Illinois : $190,800, USA : $181,400) |
Colchester City Zip Codes
| 62326 (2,478) |