Home values, rents and more in Rock County, WI
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
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How Rock County, WI compares
The typical home in Rock County, WI is worth about $297,000, according to the Zillow Home Value Index for September 2026. Home values in Rock County, WI are about the same as the typical value in the Janesville metro area ($297,000) and 19% below the U.S. typical value ($366,000).
Over the past year, home values in Rock County, WI rose 6.2%, compared with +6.2% in the Janesville metro area and +1.2% nationally.
Typical rent is $1,292 a month (Zillow Observed Rent Index), about the same as the Janesville metro area ($1,292) and 33% below the U.S. ($1,932). Rents rose 6.6% over the past year.
The median household income is $75,673, against $75,673 in the Janesville metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 166,472 people live in Rock County, WI (Census Bureau estimate for July 2025).
Rock County, WI has the 36th-lowest typical home value of the 72 counties in Wisconsin with Zillow figures.
Part of: Janesville metro area · Wisconsin
More for Rock County, WI in ProMap Plus
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- 5- and 10-year price changes
- Days on market and months of supply
- Price cuts and sale-to-list ratio
- Price-to-income and monthly cost to buy
- School test scores
- Flood, wildfire and natural hazard risk
- Property-tax rate
- Unemployment and job growth
- Building permits
- Mortgage delinquency
- 2024 presidential vote
- Age, education and household make-up
- Amenities and transit nearby
Nearby counties
Cities in Rock County, WI
- Janesville, WI $296,000
- Beloit, WI $208,000
- Edgerton, WI $307,000
- Evansville, WI $369,000
- Milton, WI $356,000
- Rock, WI $346,000
- Turtle, WI $376,000
- Harmony, WI $456,000
- Union, WI $436,000
- Clinton, WI $303,000
- Orfordville, WI $280,000
- Newark, WI $439,000
- Porter, WI $492,000
- Footville, WI $262,000
- Bradford, WI $434,000
- Magnolia, WI $444,000
- La Prairie, WI $400,000
- Johnstown, WI $459,000
- Fulton, WI $432,000
ZIP codes in Rock County, WI
Sources
Home values: Zillow Home Value Index (ZHVI), all homes, middle tier, smoothed and seasonally adjusted, September 2026. Rents: Zillow Observed Rent Index (ZORI), seasonally adjusted. Population: Census population estimates (July 2025) for states, metros and counties; ACS 2020–24 for cities and ZIP codes. Income: U.S. Census Bureau, ACS 2020–24 5-year estimates. Boundaries: U.S. Census Bureau cartographic boundary files. Compiled by Home Economics.
"Typical" is Zillow's middle-tier value (homes between the 35th and 65th percentiles), not a median sale price. Changes are over the 12 months to September 2026.