| County : | Mcdonough County |
| State : | Illinois (IL) |
| Land Area : | 589.40 sq mi |
| Water Area : | 0.78 sq mi |
| Latitude : | 40.4557890 |
| Longitude : | -90.6775788 |
| Population (2010): | 32,612 |
| Population Estimate (2012) : | 32,568 |
| Population Density : | 55.33/sq mi |
| Housing Units (2012) : | 14,419 |
| Median Household Income (2012) : | $35,812 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $56,071 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $86,500 (Illinois : $190,800, USA : $181,400) |
Mcdonough County Cities / Towns
| Adair (210) | Bardolph Village (251) | Blandinsville Village (651) |
| Bushnell City (3,117) | Colchester City (1,401) | Georgetown (404) |
| Good Hope Village (396) | Industry Village (478) | Macomb City (19,288) |
| Plymouth Village (505) | Prairie City Village (379) | Sciota Village (61) |
| Tennessee Village (115) |
Mcdonough County Zip Codes
| 61411 (378) | 61416 (235) | 61420 (1,067) |
| 61422 (3,416) | 61438 (760) | 61440 (766) |
| 61450 (1,742) | 61455 (22,086) | 61459 (433) |
| 61470 (547) | 61475 (205) | 61482 (650) |
| 61484 (825) | 62326 (2,478) | 62367 (1,345) |
| 62374 (298) |