ZIP codes
13
Rock County, WI Demographics & ZIP Codes
Rock County, Wisconsin demographics and median household income by ZIP code — 13 ZIP codes — population 169,979 — avg. income $77,108 — avg. home value $224,108. Compare income, housing, and ZIP-level data on US5.
Population
169,979
Median household income (avg.)
$77,108
103% of U.S. median
Average home value
$224,108
64% of U.S. median
Average rent
$826
71% of U.S. median
Rock County demographics
Rock County, Wisconsin covers 13 ZIP codes, with a combined ZIP-area population of about 169,979.
Median household income in Rock County
The average median household income across ZIP codes in Rock County, Wisconsin is about $77,108 — about even with the WI ZIP average ($76,216), and about 3% above the U.S. median ($75,149).
Among ZIPs with income data, 53505 is near the top at about $96,667, while 53537 (Footville) is near the bottom at about $56,375.
Housing in Rock County
For housing in Rock County, Wisconsin, the average median home value is about $224,108 and the average median rent is about $826.
The most populous ZIP is 53511 (Beloit) with about 48,305 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Rock County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 53511 | Beloit | Rock County | WI | 48,305 | $65,305 | $160,000 |
| 53546 | Janesville | Rock County | WI | 29,482 | $73,430 | $220,100 |
| 53545 | Janesville | Rock County | WI | 23,937 | $70,730 | $204,000 |
| 53548 | Janesville | Rock County | WI | 20,509 | $74,696 | $226,600 |
| 53534 | Edgerton | Rock County | WI | 12,344 | $94,250 | $280,100 |
| 53563 | Milton | Rock County | WI | 11,468 | $89,397 | $270,800 |
| 53536 | Evansville | Rock County | WI | 9,449 | $83,944 | $274,600 |
| 53520 | Brodhead | Rock County | WI | 6,758 | $74,589 | $211,500 |
| 53525 | Clinton | Rock County | WI | 4,083 | $72,991 | $229,100 |
| 53576 | Orfordville | Rock County | WI | 2,309 | $72,917 | $206,800 |
| 53537 | Footville | Rock County | WI | 818 | $56,375 | $147,400 |
| 53505 | — | Rock County | WI | 370 | $96,667 | $258,300 |
| 53501 | — | Rock County | WI | 147 | — | — |
Frequently asked questions
What are the demographics of Rock County?
Rock County, Wisconsin has a combined ZIP-area population of about 169,979 across 13 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Rock County?
The average median household income across ZIP codes in Rock County, Wisconsin is about $77,108, roughly in line with the state ZIP average ($76,216), and about 3% above the U.S. median ($75,149). Average median home value is about $224,108. Among ZIPs with data, 53505 is near the top ($96,667) and 53537 (Footville) is near the bottom ($56,375).
How many ZIP codes are in Rock County?
Rock County, Wisconsin includes 13 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Rock County?
This page lists ZIP codes in Rock County, Wisconsin with population, median household income, and home value. Select a ZIP for a full demographics profile.