Janesville, WI

Janesville sits in Rock, Wisconsin, and is covered by 4 ZIP code tabulation areas. Across those ZIPs, an estimated 73,508 people live, work, and commute. Demographic and housing figures come from the U.S. Census Bureau's American Community Survey 5-Year Estimates (2018–2022).

Each ZIP code in Janesville has its own character. Some are dense and walkable; others are exurban or rural, with single-digit households per square mile. The list below lets you compare the basic shape of each one — population, income, and home value — before clicking through to the full neighborhood profile.

Across the city overall, the typical owner-occupied home is valued near $193,400 and median asking rent runs around $996 per month. Median household income hovers around $69,749. These are averages of ZIP-level medians and will read differently depending on which neighborhood you actually settle in — which is precisely what the per-ZIP pages are for.

ZIP codes in Janesville

ZIP	County	Population	Median income	Median home value
53545	Rock	24,037	$68,849	$184,300
53546	Rock	29,352	$70,317	$198,600
53547	Rock	0	—	—
53548	Rock	20,119	$70,082	$197,300

Thinking about relocating to Janesville?

A few practical considerations as you evaluate the move:

• Pick the ZIP, not just the city. Median income, school assignments, walkability and crime patterns can vary dramatically between neighboring ZIPs in the same city. Use the per-ZIP pages to compare.
• Compare housing math honestly. The median home value here is $193,400, and median rent is $996. At current mortgage rates, that often makes renting the more flexible option for the first 12–24 months while you learn the neighborhoods.
• Verify the commute. Drive your prospective work or school route at peak time — Google Maps optimistic estimates rarely match what locals actually experience.
• Check the boring stuff. Property tax rates, HOA dues, flood-zone designation, and homeowner's insurance availability are easier to research before you sign than after.