20 ZIP Code Tabulation Areas in Rock County, Wisconsin. The population-weighted median household income is about $77,903, the median home value about $247,688, and 70.6% of occupied homes are owner-occupied.
- 20
- ZIP codes
- 239.6K
- Population
- 53
- Data points
Rock County at a glance
- $77,903
- Median household income
- $247,688
- Median home value
- 39.8
- Median age
- 70.6%
- Owner-occupied
- 103,821
- Housing units
Income, home value, and age are population-weighted averages of the ZIP-level medians in the file. Counts are exact.
Top 5 Rock County ZIP codes by median household income| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 53521 | Brooklyn | 3,640 | 88.3% | $108,036 |
| 2 | 53589 | Stoughton | 19,550 | 75.7% | $96,226 |
| 3 | 53505 | — | 358 | 85.4% | $91,500 |
| 4 | 53563 | Janesville | 11,280 | 84.6% | $89,528 |
| 5 | 53534 | Edgerton | 12,241 | 78.1% | $89,045 |
Top 5 Rock County ZIP codes by population| # | ZIP | City | Population | Homeowner % | Median HH $ |
|---|
| 1 | 53511 | Beloit | 48,701 | 65.9% | $67,067 |
| 2 | 53546 | Janesville | 29,867 | 74.5% | $75,825 |
| 3 | 53545 | Janesville | 24,703 | 64.7% | $73,889 |
| 4 | 53190 | Lake Lorraine | 20,499 | 46.9% | $66,069 |
| 5 | 53548 | Footville | 19,916 | 69.9% | $76,869 |
Top 5 Rock County ZIP codes by Homeowner GDP| # | ZIP | City | Population | Homeowner % | Median HH $ | Homeowner GDP |
|---|
| 1 | 53511 | Beloit | 48,701 | 65.9% | $67,067 | $813.1M |
| 2 | 53546 | Janesville | 29,867 | 74.5% | $75,825 | $695.2M |
| 3 | 53589 | Stoughton | 19,550 | 75.7% | $96,226 | $613.3M |
| 4 | 53545 | Janesville | 24,703 | 64.7% | $73,889 | $521.6M |
| 5 | 53538 | Fort Atkinson | 18,813 | 74.3% | $82,783 | $489.4M |
Homeowner GDP = owner-occupied units × median household income — a proxy for aggregate homeowner spending power in a ZIP, useful for scoring market opportunity. Not an official economic statistic.
Densest: 53545 (Janesville) at 1,098 people/sq mi. Least dense: 53505 at 16 people/sq mi.
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