Lake KoshkonongWI
Some 1,010 people live in this town, in Wisconsin.
Is Lake Koshkonong a good place to live?
32% of residents are 65 or older in Lake Koshkonong, above both Wisconsin’s towns (20%) and U.S. towns (18%). Only 8 of the 264 Wisconsin towns we compare have a lower typical home value than Lake Koshkonong. The biggest park or preserve is Koshkonong Wildlife Area, at 764 acres. We don’t grade Lake Koshkonong yet; the figures below are still real.
1,010 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
Moving to Lake Koshkonong: who provides what
Lake Koshkonong is unincorporated, so Jefferson County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.
The data
Ordered by what stands out in Lake Koshkonong.
The typical home in Lake Koshkonong is valued at about $212K
Typical home values fell 1.6% in the year to September 2026. In Lake Koshkonong, 90% of households own their home. The town’s typical rent is $1,296 a month.
| Lake Koshkonong | Wisconsin towns | U.S. towns | |
|---|---|---|---|
| Households that own their home | 90% | 74% | 73% |
| Median rent | $1,296 a month | $1,078 a month | $1,185 a month |
Typical home value
Census ACS, 2020–24 · Zillow Home Value Index · Redfin Data Center
Lake Koshkonong has 0.2 jobs for every working resident, so most commute out
Among residents in Lake Koshkonong, 5.8% live below the poverty line. Most working residents leave Lake Koshkonong for work: only 2% work in town. This Wisconsin town had 119 jobs in 2023, up 76 from 2013. The top destinations are Fort Atkinson (21%), Madison (7%) and Janesville (6%).
| Lake Koshkonong | Wisconsin towns | U.S. towns | |
|---|---|---|---|
| Working residents who work in town | 1.6% | 8.3% | 8% |
| Median household income | $97,000 | $87,000 | $80,000 |
| Average trip to work | 26 minutes | 22 minutes | 25 minutes |
| Below the poverty line | 5.8% | 6.4% | 9.6% |
Where working residents work
Census LEHD 2023 · ACS
A older population than Wisconsin as a whole
Lake Koshkonong’s midpoint age comes in at 54 years. Here, 27% of adults 25 and older have a bachelor’s degree, against 33% in Wisconsin as a whole. For residents in the town, the share who are under 18 is 15%.
| Lake Koshkonong | Wisconsin towns | U.S. towns | |
|---|---|---|---|
| Median age | 54 years | 42.1 years | 40.5 years |
| Under 18 | 15% | 21% | 22% |
| Bachelor’s degree or more, 25+ | 27% | 32% | 29% |
Ages · share of residents
Education · adults 25 and older
Women and men · all residents
46% women, 54% men
About 116 men for every 100 women (the survey’s margin: ±3 points). Across Wisconsin, 49.9% of residents are women.
| Lake Koshkonong | WI | U.S. | |
|---|---|---|---|
| Under 10 | 2.6% | 11.2% | 11.6% |
| 10 to 17 | 12.8% | 10.2% | 10.3% |
| 18 to 24 | 4.9% | 9.3% | 9.1% |
| 25 to 34 | 6.5% | 12.6% | 13.7% |
| 35 to 44 | 4.2% | 12.7% | 13.2% |
| 45 to 54 | 21.5% | 11.8% | 12.2% |
| 55 to 64 | 16.1% | 13.8% | 12.7% |
| 65 to 74 | 18.3% | 11.2% | 10.2% |
| 75 and older | 13.2% | 7.3% | 7% |
| No diploma | 3% | 6.4% | 10.4% |
| High school | 37.7% | 29.4% | 26% |
| Some college | 23.3% | 19.5% | 19.1% |
| Associate’s | 8.8% | 11.3% | 8.8% |
| Bachelor’s | 17.9% | 22% | 21.6% |
| Graduate | 9.3% | 11.4% | 14.1% |
U.S. Census Bureau · ACS 2020-2024 5-year estimates · in a town of 1,000, single groups can be off by several points
Lake Koshkonong has four seasons and pleasant summers
In Lake Koshkonong, the typical July afternoon high is 83°F.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
Top of a high hazard risk in Lake Koshkonong: inland flooding
66% of the town’s expected losses from natural hazards come from inland flooding, followed by tornadoes at 12%. Lake Koshkonong’s FEMA risk score stands at 67 of 100.
FEMA National Risk Index · OpenFEMA
How healthy Lake Koshkonong is
37% of adults have high blood pressure in Lake Koshkonong. On the CDC’s 32 measures, Lake Koshkonong is ahead of Wisconsin on 2 and behind on 5. Among adults in the town, 15% report frequent physical distress and 30% get no exercise outside work.
| Lake Koshkonong | Wisconsin towns | U.S. towns | |
|---|---|---|---|
| Obesity (CDC PLACES) | 42% | 38% | 35% |
| Frequent physical distress (CDC PLACES) | 15% | 13% | 14% |
| Get no exercise (CDC PLACES) | 30% | 26% | 25% |
| Diabetes (CDC PLACES) | 13% | 11% | 12% |
| What stands out | Lake Koshkonong | WI |
|---|---|---|
| More adults treating high blood pressure | 81% | 77.8% |
| More adults getting cholesterol checked | 89% | 85.9% |
| More adults with COPD | 8.2% | 6.5% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
5.9% of Lake Koshkonong is conserved land
For Lake Koshkonong, the density of trails is 0.1 miles per square mile. There are 3.1 miles of trail across 3 parks and preserves. Parks and preserves in the town: 3, covering 789 acres.
| Lake Koshkonong | Wisconsin towns | U.S. towns | |
|---|---|---|---|
| Miles of trail per square mile | 0.1 miles per square mile | 0.4 | 0.4 |
| Conserved land | 5.9% | 3.8% | 4.3% |
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Koshkonong Wildlife Area | — | 764 |
| 2. Indian Mound County Park | — | 21 |
| 3. Altpeter Park | — | 4 |
Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US
Everything we know about Lake Koshkonong
Colleges nearby
1 within 15 miles of the center of Lake Koshkonong
About 1 of every 100 Lake Koshkonong residents are enrolled in college, against 6 across Wisconsin.
98% of working residents leave Lake Koshkonong for work
Where Lake Koshkonong’s working residents go each day. Line width shows the share.
Census LEHD 2023
About Lake Koshkonong
Census-designated place in Wisconsin, United States
Lake Koshkonong is a census-designated place (CDP) in the towns of Koshkonong and Sumner, Jefferson County, Wisconsin, United States. The population was 1,239 at the 2020 census. Lake Koshkonong is in the area.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 30 sq mi
- Elevation
- 781 ft
Questions about Lake Koshkonong
Short answers, built from the data on this page.
Is Lake Koshkonong, WI a good place to live?
We don’t grade Lake Koshkonong yet; the figures below are still real. Some 1,010 people live in this town, in Wisconsin.