| County : | Monroe County |
| State : | Illinois (IL) |
| Land Area : | 385.01 sq mi |
| Water Area : | 13.02 sq mi |
| Latitude : | 38.2779831 |
| Longitude : | -90.1790777 |
| Population (2010): | 32,957 |
| Population Estimate (2012) : | 33,003 |
| Population Density : | 85.60/sq mi |
| Housing Units (2012) : | 13,392 |
| Median Household Income (2012) : | $71,033 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $83,757 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $198,300 (Illinois : $190,800, USA : $181,400) |
Monroe County Cities / Towns
| Columbia City (9,707) | Fults Village (26) | Hecker Village (481) |
| Maeystown Village (157) | Valmeyer Village (1,263) | Waterloo City (9,811) |
Monroe County Zip Codes
| 62236 (12,562) | 62244 (1,156) | 62248 (320) |
| 62264 (3,338) | 62277 (1,314) | 62278 (6,690) |
| 62279 (69) | 62295 (1,599) | 62298 (16,609) |