Home values, rents and more in Lake Koshkonong, WI
September 2026 figures from Zillow and the U.S. Census Bureau · updated 2026-11-07
Open Lake Koshkonong in ProMap- Under $350k
- $350k–$360k
- $360k–$370k
- $370k–$390k
- $390k+
- No data
How Lake Koshkonong compares
The typical home in Lake Koshkonong, WI is worth about $211,000, according to the Zillow Home Value Index for September 2026. Home values in Lake Koshkonong are 43% below the typical value in the Watertown metro area ($369,000) and 42% below the U.S. typical value ($366,000).
Over the past year, home values in Lake Koshkonong fell 1.6%, compared with +5.3% in the Watertown metro area and +1.2% nationally.
The median household income is $97,115, against $83,750 in the Watertown metro area and $80,734 in the U.S. (Census Bureau, American Community Survey 2020–24).
About 1,010 people live in Lake Koshkonong (American Community Survey 2020–24).
Lake Koshkonong has the lowest typical home value of the 12 cities in the Watertown metro area and the 53rd-lowest of 690 in Wisconsin with Zillow figures.
Part of: Jefferson County, WI · Watertown metro area · Wisconsin
More for Lake Koshkonong 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.