| City : | Janesville City |
| County : | Rock County, Sanders County |
| State : | Wisconsin (WI) |
| | |
| Land Area : | 33.86 sq mi |
| Water Area : | 0.59 sq mi |
| Latitude : | 42.6846985 |
| Longitude : | -89.0131701 |
| | |
| Population (2010): | 63,575 |
| Population Estimate (2012) : | 63,586 |
| Population Density : | 1,877.65/sq mi |
| Housing Units (2012) : | 27,996 |
| Median Household Income (2012) : | $49,084 (Wisconsin : $52,627, USA : $53,046) |
| Median Family Income (2012) : | $59,907 (Wisconsin : $66,415, USA : $64,585) |
| Median House Price (2012) : | $131,700 (Wisconsin : $169,000, USA : $181,400) |