Lake Koshkonong
Census-designated place in Jefferson County, Wisconsin

Lake Koshkonong is an unincorporated community (census-designated place) in Jefferson County, Wisconsin, with 1,239 residents (2020 Census). It sits at 781 ft (238 m) above sea level. The nearest town is Fort Atkinson, 5.7 miles NE.
- 1,239residents (2020 Census)
- 781 ftelevation · 238 m
- 14.1 sq miland area · 36.5 km²
- 88 / sq mipopulation density
- 53538ZIP code
About Lake Koshkonong
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.
Text: Wikipedia · CC BY-SA 4.0
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Living in Lake Koshkonong
- Median household income
- $97,115
- Median home value
- $370,300
- Median rent
- $1,296/mo
- Median age
- 54
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Map of Lake Koshkonong
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Open in Google Maps ›Lake Koshkonong, WI population
Lake Koshkonong had 1,239 residents in the 2020 Census.
| 2020 Census | 1,239 |
|---|---|
| Density | 88 per sq mi (34 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Lake Koshkonong at a glance
| State | Wisconsin (WI) |
|---|---|
| County | Jefferson County |
| Type | Census-designated place |
| Population | 1,239 (2020) |
| Land area | 14.10 sq mi (36.5 km²) |
| Water area | 15.72 sq mi (40.73 km²) |
| Elevation | 781 ft (238 m) |
| Coordinates | 42.8605° N, 88.9401° W |
| ZIP code | 53538 |
| Census code (GEOID) | 5541583 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Lake Koshkonong
- Fort Atkinson5.7 mi NE
- Milton5.9 mi S
- Edgerton6.7 mi W
- Rockdale8.8 mi NW
- Fulton10.2 mi W
- Lake Ripley10.5 mi N
- Whitewater10.6 mi E
- Cambridge10.9 mi NW
- Jefferson11.9 mi NE
- Janesville12.7 mi S
- Hebron13.3 mi E
- Lake Lorraine13.6 mi SE
Straight-line distance between town centers.
Frequently asked questions about Lake Koshkonong
What county is Lake Koshkonong in?
Lake Koshkonong is in Jefferson County, Wisconsin.
What is the population of Lake Koshkonong, WI?
1,239 people lived in Lake Koshkonong at the 2020 Census.
What is the ZIP code of Lake Koshkonong, WI?
The ZIP code of Lake Koshkonong is 53538.
What is the elevation of Lake Koshkonong?
781 feet (238 m) above sea level.
What towns are near Lake Koshkonong?
Fort Atkinson (5.7 mi), Milton (5.9 mi), Edgerton (6.7 mi), Rockdale (8.8 mi), Fulton (10.2 mi).
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