Rock County, Wisconsin
Rock County covers 718 sq mi of land and has about 164,350 residents. 16 zip codes lie mainly within it, spread across 12 cities and towns. Zip codes that only partly reach into the county are listed on each zip's own page.
Population
164,350
229/sq mi
Median household income
$76K
U.S. $81K
Median home value
$232K
U.S. $333K
Median rent
$1,037
U.S. $1,413
Median age
40.3
U.S. 38.9
Poverty rate
9.3%
U.S. 12.5%
Cities and towns
Zip codes in Rock County
16 total
| Zip | City | Type | Population | IncomeMedian income |
|---|---|---|---|---|
| 53501 | Afton | 165 | — | |
| 53505 | Avalon | 358 | $91,500 | |
| 53511 | Beloit | 48,701 | $67,067 | |
| 53512 | Beloit · PO box | — | — | |
| 53520 | Brodhead | 6,687 | $75,205 | |
| 53525 | Clinton | 4,066 | $79,323 | |
| 53534 | Edgerton | 12,241 | $89,045 | |
| 53536 | Evansville | 9,547 | $87,667 | |
| 53537 | Footville | 752 | $59,821 | |
| 53542 | Hanover · PO box | — | — | |
| 53545 | Janesville | 24,703 | $73,889 | |
| 53546 | Janesville | 29,867 | $75,825 | |
| 53547 | Janesville · PO box | — | — | |
| 53548 | Janesville | 19,916 | $76,869 | |
| 53563 | Milton | 11,280 | $89,528 | |
| 53576 | Orfordville | 2,131 | $63,750 |
Rock County at a glance
Compared with the U.S.
Household income distribution
<$25k
13%
$25–50k
19%
$50–75k
18%
$75–100k
17%
$100–150k
18%
$150–200k
9%
$200k+
7%
Highest education (adults 25+)
No diploma
7%
High school
33%
Some college
22%
Associate's
12%
Bachelor's
18%
Graduate
8%
How people get to work
Drove alone
80%
Carpooled
7%
Transit
0.5%
Walked
2%
Bicycle
0.1%
Worked from home
9%
Other
1%
At a glance
| Rock | U.S. | |
|---|---|---|
| Own their home | 71.2% | 65.2% |
| Bachelor's degree or higher | 25.8% | 35.7% |
| Work from home | 9.2% | 15.1% |
| Households with broadband | 90.3% | 91% |
| Without health insurance | 5.5% | 8.4% |
| Foreign-born | 4.6% | 14.1% |
| Veterans (of adults) | 6.9% | 6.2% |
| Unemployment | 3.8% | 5.2% |
| Average commute | 23.8 min | 26.4 min |