| County : | Rock County |
| State : | Wisconsin (WI) |
| Land Area : | 718.14 sq mi |
| Water Area : | 7.96 sq mi |
| Latitude : | 42.6699307 |
| Longitude : | -89.0751194 |
| Population (2010): | 160,331 |
| Population Estimate (2012) : | 160,356 |
| Population Density : | 223.26/sq mi |
| Housing Units (2012) : | 68,422 |
| Median Household Income (2012) : | $50,316 (Wisconsin : $52,627, USA : $53,046) |
| Median Family Income (2012) : | $60,703 (Wisconsin : $66,415, USA : $64,585) |
| Median House Price (2012) : | $136,700 (Wisconsin : $169,000, USA : $181,400) |
Rock County Cities / Towns
| Beloit City (36,966) | Brodhead City (3,293) | Clinton Village (2,154) |
| Edgerton City (5,461) | Evansville City (5,012) | Footville Village (808) |
| Hanover (181) | Janesville City (63,575) | Milton City (5,546) |
| Orfordville Village (1,442) |
Rock County Zip Codes
| 53114 (2,678) | 53190 (19,200) | 53501 (23) |
| 53505 (354) | 53511 (48,929) | 53520 (6,810) |
| 53521 (3,656) | 53525 (4,052) | 53534 (11,512) |
| 53536 (8,503) | 53537 (781) | 53538 (18,468) |
| 53545 (23,117) | 53546 (30,648) | 53548 (18,558) |
| 53563 (10,728) | 53576 (2,319) | 53585 (2,215) |
| 53589 (19,427) |