| Zip Code : | 61008 |
| City : | Belvidere city, Cherry Valley village, Poplar Grove village, Rockford city, Timberlane village |
| County : | Winnebago County, Boone County |
| State : | Illinois (IL) |
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| Land Area : | 86.44 sq mi |
| Water Area : | 0.57 sq mi |
| Latitude : | 42.2459193 |
| Longitude : | -88.8411298 |
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| Population (2010): | 34,311 |
| Population Estimate (2012) : | 34,364 |
| Population Density : | 396.93/sq mi |
| Housing Units (2012) : | 12,775 |
| Median Household Income (2012) : | $59,471 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $66,918 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $152,000 (Illinois : $190,800, USA : $181,400) |