Rock County Wisconsin Map and Data
Rock County Wisconsin Profile and Data
| Name | Rock County |
| State | Wisconsin |
| FIPS Code | 55105 |
| County Seat | Janesville |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 160,356 |
| Population Growth Rate(2000-2022) | 2.09% |
| Majority Ethnicity | White 93.29% |
| Public School Majority Ethnicity | White 68% |
| Partisan Voting Index | Democratic:+4 |
| Unemployment Rate (June 2025) | 3.6% |
| Area Code(s) | 608 / 262 |
Rock County Race/Ethnicity Data
| Race/Ethnicity | Percentage of Population (2022) |
|---|---|
| White | 93.29% |
| African American | 5.18% |
| Hispanic | 0.23% |
| Asian | 1.28% |
| Native American | 0.01% |
| Hawaiin/Pacific Islander | 0.01% |
Rock County Public School Race/Ethnicity Data
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 67.76% |
| African American | 7.07% |
| Hispanic | 16.85% |
| Asian | 1.24% |
| Native American | 0.24% |
| Hawaiin/Pacific Islander | 0.06% |