Rock County vs Washington County
A side-by-side comparison of Rock County and Washington County: population, income, housing, and more.
Rock County and Washington County are counties in Wisconsin. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
Rock County has the higher population (163,944 vs 137,320 in Washington County). Washington County has the higher median household income ($95,851 vs $74,390 in Rock County). Washington County has the higher median home value ($316,200 vs $215,900 in Rock County).
Population, income & housing
| Rock County | Washington County | |
|---|---|---|
| Population | 163,944 | 137,320 |
| Median age | 40.1 yrs | 43.5 yrs |
| Median household income | $74,390 | $95,851 |
| Median home value | $215,900 | $316,200 |
| Median gross rent | $1,019 | $1,126 |
| Housing units | 70,694 | 58,766 |
| Homeownership rate | 70.6% | 78.1% |
| Bachelor's degree or higher | 25.7% | 34.8% |
| Unemployment rate | 4.0% | 2.7% |
Trends (ACS 5-year, 2019–2023)
| Rock County | Washington County | |
|---|---|---|
| Population | 162,152 → 163,944 (+1.1%) | 134,925 → 137,320 (+1.8%) |
| Median household income | $57,875 → $74,390 (+28.5%) | $77,663 → $95,851 (+23.4%) |
| Median home value | $146,200 → $215,900 (+47.7%) | $236,200 → $316,200 (+33.9%) |
| Median gross rent | $838 → $1,019 (+21.6%) | $908 → $1,126 (+24.0%) |
Rock County
162,152163,944
$57,875$74,390
$146,200$215,900
$838$1,019
Washington County
134,925137,320
$77,663$95,851
$236,200$316,200
$908$1,126
Age & race/ethnicity
Age distribution (share)
| Rock County | Washington County | |
|---|---|---|
| Under 5 | 5.7% | 4.9% |
| 5 to 17 | 17.0% | 16.4% |
| 18 to 24 | 8.4% | 7.2% |
| 25 to 34 | 12.2% | 10.4% |
| 35 to 44 | 12.6% | 12.8% |
| 45 to 54 | 12.5% | 13.2% |
| 55 to 64 | 14.2% | 15.9% |
| 65 to 74 | 10.5% | 11.6% |
| 75 and over | 6.8% | 7.6% |
Race & ethnicity (share)
| Rock County | Washington County | |
|---|---|---|
| White (non-Hispanic) | 80.2% | 90.8% |
| Black or African American | 4.6% | 1.5% |
| American Indian & Alaska Native | 0.0% | 0.1% |
| Asian | 1.1% | 1.5% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.2% | 0.2% |
| Two or more races | 3.9% | 2.1% |
| Hispanic or Latino | 9.9% | 3.7% |
Educational attainment (age 25+)
Share of adults 25+
| Rock County | Washington County | |
|---|---|---|
| No high school diploma | 7.4% | 4.4% |
| High school graduate | 33.3% | 28.5% |
| Some college or associate's | 33.6% | 32.3% |
| Bachelor's degree | 17.7% | 24.1% |
| Graduate or professional degree | 8.0% | 10.7% |
Commute to work
How workers get to work (share)
| Rock County | Washington County | |
|---|---|---|
| Drove alone | 80.3% | 79.4% |
| Carpooled | 8.2% | 6.0% |
| Public transit | 0.5% | 0.2% |
| Walked | 1.8% | 1.0% |
| Bicycle | 0.2% | 0.2% |
| Worked from home | 8.2% | 12.4% |
| Other means | 1.0% | 0.8% |
Housing
Units in structure (share)
| Rock County | Washington County | |
|---|---|---|
| 1-unit, detached | 74.3% | 68.9% |
| 1-unit, attached | 4.3% | 8.3% |
| 2 to 4 units | 7.5% | 7.1% |
| 5 to 19 units | 5.6% | 9.0% |
| 20 or more units | 5.8% | 5.5% |
| Mobile home & other | 2.5% | 1.2% |
Poverty & households
| Rock County | Washington County | |
|---|---|---|
| Poverty rate | 10.0% | 5.3% |
| Average household size | 2.42 | 2.41 |
| Mean commute (minutes) | 24 | 26 |
| Median year structure built | 1970 | 1984 |
Full profiles
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