Rock County, WI ZIP Codes
15 ZIP codes cover all or part of Rock County, Wisconsin. The Census Bureau counts 164,350 residents in the county, with a median household income of $75,673 and a median home value of $231,600. Median household income ranges from $63,750 in 53576 to $89,528 in 53563. Its largest communities include Janesville, Beloit, Edgerton, Evansville and Milton.
Rock County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 164,350 |
| Households | 67,201 |
| Median household income | $75,673 |
| Median home value | $231,600 |
| Median age | 40.3 |
| Median rent | $1,037 |
All 15 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 192,892 |
| Households (sum of ZIP codes) | 77,768 |
| Median household income, range across ZIP codes | $63,750 (53576) to $89,528 (53563) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $74,827 |
| Homeowners | 69.2% |
| Households with kids under 18 | 26.9% |
| Moved in the past year | 11.6% |
| Carrier routes in EDDM2GO's route library | 78 routes, 43,429 homes (8 of 15 ZIP codes) |
Top facts
- Highest median household income in Rock County: 53563 ($89,528)
- Most residents: 53511 (48,701 people)
- Highest homeownership: 53114 (84.9% own their home)
- Most households with kids: 53563 (32.3% of households)
- Most new movers: 53190 (29.7% moved in last year)
- Youngest median age: 53190 (23.7 years)
- Highest median home value: 53536 ($304,900)
Every ZIP code in Rock County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 53511 | Beloit | 48,701 | 18,392 | $67,067 | $173,500 | 65.9% | 28.1% | 10.8% | — | — | 100% of its land |
| 53546 | Janesville | 29,867 | 12,314 | $75,825 | $239,400 | 74.5% | 28.1% | 8.1% | 22 | 14,036 | 100% of its land |
| 53545 | Janesville | 24,703 | 10,909 | $73,889 | $220,700 | 64.7% | 25.6% | 10.4% | — | — | 100% of its land |
| 53190 | Whitewater | 20,499 | 7,126 | $66,069 | $265,100 | 46.9% | 19.2% | 29.7% | 12 | 7,637 | 27% of its land |
| 53548 | Janesville | 19,916 | 8,562 | $76,869 | $234,900 | 69.9% | 25.4% | 7.8% | 15 | 8,550 | 100% of its land |
| 53534 | Edgerton | 12,241 | 4,808 | $89,045 | $294,900 | 78.1% | 32.0% | 12.7% | 10 | 6,387 | 52% of its land |
| 53563 | Milton | 11,280 | 4,632 | $89,528 | $293,800 | 84.6% | 32.3% | 7.0% | — | — | 98% of its land |
| 53536 | Evansville | 9,547 | 4,116 | $87,667 | $304,900 | 77.5% | 28.6% | 11.1% | 8 | 4,007 | 100% of its land |
| 53520 | Brodhead | 6,687 | 2,914 | $75,205 | $222,600 | 75.9% | 24.3% | 8.4% | 7 | 3,020 | 53% of its land |
| 53525 | Clinton | 4,066 | 1,641 | $79,323 | $248,100 | 78.1% | 28.2% | 6.4% | — | — | 95% of its land |
| 53576 | Orfordville | 2,131 | 943 | $63,750 | $225,000 | 75.0% | 30.1% | 6.1% | 2 | 868 | 100% of its land |
| 53114 | Darien | 1,979 | 809 | $72,708 | $241,000 | 84.9% | 26.2% | 6.1% | 2 | 924 | 24% of its land |
| 53537 | Footville | 752 | 353 | $59,821 | $155,100 | 77.1% | 24.9% | 5.0% | — | — | 100% of its land |
| 53505 | Avalon | 358 | 164 | $91,500 | $300,000 | 85.4% | 14.0% | 0.6% | — | — | 100% of its land |
| 53501 | Afton | 165 | 85 | — | — | 0.0% | 0.0% | 0.0% | — | — | 100% of its land |
A ZIP code is listed for Rock County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Janesville — 66,030 residents · 3 ZIP codes
- Beloit — 36,534 residents · 1 ZIP code
- Edgerton — 6,014 residents · 1 ZIP code
- Evansville — 5,782 residents · 1 ZIP code
- Milton — 5,706 residents · 1 ZIP code
- Brodhead — 3,197 residents · 1 ZIP code
- Clinton — 2,041 residents · 1 ZIP code
- Orfordville — 1,473 residents · 1 ZIP code
- Lake Koshkonong — 1,010 residents · 2 ZIP codes
- Footville — 908 residents · 2 ZIP codes
- Allens Grove — 147 residents · 2 ZIP codes
- Hanover — 130 residents · 2 ZIP codes
- Shopiere — 123 residents · 2 ZIP codes
- Fulton — 31 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Rock County — 12 ZIP codes ranked
- ZIP codes with the highest home values in Rock County — 12 ZIP codes ranked
- ZIP codes with the highest homeownership in Rock County — 12 ZIP codes ranked
- ZIP codes with the most families with kids in Rock County — 12 ZIP codes ranked
- ZIP codes with the most new movers in Rock County — 12 ZIP codes ranked
- Youngest ZIP codes in Rock County — 12 ZIP codes ranked
- Oldest ZIP codes in Rock County — 12 ZIP codes ranked
- Fastest-growing ZIP codes in Rock County — 12 ZIP codes ranked
Price a mailing to Rock County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Rock County, WI?
- 53511, 53546, 53545, 53190, 53548, 53534, 53563, 53536, 53520, 53525, 53576, 53114, 53537, 53505 and 53501. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Rock County?
- 164,350 residents in 67,201 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Rock County?
- $75,673 for the county as a whole. Its ZIP codes range from $63,750 (53576) to $89,528 (53563).
- Which Rock County ZIP code has the highest median household income?
- 53563, at $89,528, among ZIP codes with at least 1,000 residents. See the full ranking of Rock County ZIP codes by income.
- How many carrier routes and mailboxes are in Rock County?
- For the 8 of 15 ZIP codes in EDDM2GO's stored route library: 78 carrier routes reaching 43,429 residential and 1,991 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.