| County : | Winnebago County |
| State : | Illinois (IL) |
| Land Area : | 513.36 sq mi |
| Water Area : | 5.89 sq mi |
| Latitude : | 42.3373957 |
| Longitude : | -89.1612053 |
| Population (2010): | 295,266 |
| Population Estimate (2012) : | 294,433 |
| Population Density : | 575.16/sq mi |
| Housing Units (2012) : | 125,965 |
| Median Household Income (2012) : | $47,573 (Illinois : $56,853, USA : $53,046) |
| Median Family Income (2012) : | $59,490 (Illinois : $70,144, USA : $64,585) |
| Median House Price (2012) : | $127,500 (Illinois : $190,800, USA : $181,400) |
Winnebago County Cities / Towns
| Cherry Valley Village (3,162) | Durand Village (1,443) | Lake Summerset (2,048) |
| Loves Park City (23,996) | Machesney Park Village (23,499) | New Milford Village (697) |
| Pecatonica Village (2,195) | Rockford City (152,871) | Rockton Village (7,685) |
| Roscoe Village (10,785) | South Beloit City (7,892) | Winnebago Village (3,101) |
Winnebago County Zip Codes
| 60146 (2,713) | 61008 (34,311) | 61011 (2,945) |
| 61016 (4,837) | 61019 (3,550) | 61020 (3,108) |
| 61024 (2,620) | 61047 (1,711) | 61063 (4,132) |
| 61072 (11,797) | 61073 (20,052) | 61077 (73) |
| 61079 (188) | 61080 (10,599) | 61084 (3,175) |
| 61088 (6,020) | 61101 (21,593) | 61102 (20,538) |
| 61103 (24,578) | 61104 (19,269) | 61107 (30,439) |
| 61108 (28,550) | 61109 (28,333) | 61111 (23,492) |
| 61112 (86) | 61114 (15,776) | 61115 (23,180) |