| County : | Marshall County |
| State : | Illinois (IL) |
| Land Area : | 386.79 sq mi |
| Water Area : | 11.73 sq mi |
| Latitude : | 41.0311192 |
| Longitude : | -89.3423714 |
| Population (2010): | 12,640 |
| Population Estimate (2012) : | 12,567 |
| Population Density : | 32.68/sq mi |
| Housing Units (2012) : | 5,914 |
| Median Household Income (2012) : | $52,565 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $65,407 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $103,500 (Illinois : $190,800, USA : $181,400) |
Marshall County Cities / Towns
| Henry City (2,464) | Hopewell Village (410) | Lacon City (1,937) |
| La Rose Village (144) | Sparland Village (406) | Toluca City (1,414) |
| Varna Village (384) | Washburn Village (1,155) | Wenona City (1,056) |
Marshall County Zip Codes
| 61336 (628) | 61358 (478) | 61369 (1,711) |
| 61375 (1,156) | 61377 (1,457) | 61421 (1,392) |
| 61424 (100) | 61479 (165) | 61491 (2,197) |
| 61523 (11,204) | 61526 (1,088) | 61537 (2,974) |
| 61540 (2,916) | 61541 (136) | 61565 (1,504) |
| 61570 (1,879) | 61760 (2,544) |