Home values, rents and more in Union, WI
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
Open Union in ProMap- Under $390k
- $390k–$430k
- $430k–$500k
- $500k+
- No data
How Union compares
The typical home in Union, WI is worth about $436,000, according to the Zillow Home Value Index for September 2026. Home values in Union are 47% above the typical value in the Janesville metro area ($297,000) and 19% above the U.S. typical value ($366,000).
Over the past year, home values in Union rose 8.5%, compared with +6.2% in the Janesville metro area and +1.2% nationally.
The median household income is $99,279, against $75,673 in the Janesville metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 2,235 people live in Union (American Community Survey 2020–24).
Union has the 6th-highest typical home value of the 19 cities in the Janesville metro area and the 136th-highest of 690 in Wisconsin with Zillow figures.
Part of: Rock County, WI · Janesville metro area · Wisconsin
More for Union 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
- Crime rates
- Homeowners insurance premiums
- Commute time to downtown
- Flood, wildfire and natural hazard risk
- Property-tax rate
- 2024 presidential vote
- Age, education and household make-up
- Amenities and transit nearby
Nearby cities
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.