| Zip Code : | 62249 |
| City : | Grantfork village, Highland city, St. Jacob village |
| County : | Madison County, Clinton County |
| State : | Illinois (IL) |
| | |
| Land Area : | 85.21 sq mi |
| Water Area : | 1.69 sq mi |
| Latitude : | 38.7545559 |
| Longitude : | -89.6672784 |
| | |
| Population (2010): | 15,971 |
| Population Estimate (2012) : | 15,318 |
| Population Density : | 187.44/sq mi |
| Housing Units (2012) : | 6,511 |
| Median Household Income (2012) : | $69,081 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $78,561 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $172,200 (Illinois : $190,800, USA : $181,400) |