Census-designated place · Wisconsin
Okauchee Lake, Wisconsin
Okauchee Lake, census-designated place, in Waukesha County, Wisconsin. Okauchee Lake had 4,733 people in the ACS 2020-2024 5-year estimates (±446). GEOID 5559650.
Residents, 2020-2024
4,733
±446 (90% margin)
2020 Census count: 5,094
Median household income
$131,170
±$13,505 (90% margin)
Wisconsin: $77,485
Median home value
$497,500
±$49,137 (90% margin)
Wisconsin: $266,500
Median gross rent
$1,391
±$753 (90% margin)
Wisconsin: $1,087
Where is Okauchee Lake and what county is it in?
Okauchee Lake is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Waukesha County, Wisconsin. It covers 3.7 square miles of land, 1,365 residents per square mile in 2020.
Okauchee Lake is in the Milwaukee-Waukesha, WI metropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Okauchee Lake lies mostly within the Town of Oconomowoc and reaches into the Town of Merton, towns or townships with their own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Okauchee Lake, and is it growing?
The 2020-2024 American Community Survey puts Okauchee Lake's population at 4,733 (±446). The 2020 Census counted 5,094 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; Okauchee Lake is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Okauchee Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 4,733 ±446 | 411,762 | no clear change |
| Households | 1,960 ±204 | 168,658 | no clear change |
| Average household size | 2.41 ±0.16 | 2.42 | no clear change |
| Housing units | 2,324 ±233 | 175,591 | +300 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Okauchee Lake?
The median resident of Okauchee Lake is 51.9 years old; 18.1% are under 18 and 26.4% are 65 or older. The largest group is non-Hispanic white residents at 94.9%, then Hispanic or Latino residents (of any race) at 2.6%.
| Measure | Okauchee Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 51.9 ±4.7 | 43.5 | no clear change |
| Under 18 years | 18.1% ±3.7 pts | 21.0% | – |
| 65 years and over | 26.4% ±4.8 pts | 20.5% | – |
| Male | 50.0% ±3.7 pts | 49.6% | – |
| Hispanic or Latino (any race) | 2.6% ±2.4 pts | 5.7% | – |
| White alone, not Hispanic | 94.9% ±3.0 pts | 85.0% | no clear change |
| Black or African American alone, not Hispanic | 0.8% ±1.2 pts | 1.5% | – |
| Asian alone, not Hispanic | 0.2% ±0.5 pts | 3.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.5 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.5 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.5% ±1.2 pts | 3.2% | – |
| Some other race alone, not Hispanic | 0.0% ±0.5 pts | 0.5% | – |
| Born outside the United States | 1.2% ±0.8 pts | 5.5% | – |
| Speak a language other than English at home (age 5+) | 2.2% ±2.3 pts | 7.7% | – |
| Civilian veterans (age 18+) | 6.5% ±2.9 pts | 5.5% | – |
| With a disability | 7.5% ±2.3 pts | 9.7% | – |
| No health insurance coverage | 5.3% ±3.3 pts | 3.1% | – |
| High school graduate or higher (age 25+) | 99.2% ±0.6 pts | 97.2% | – |
| Bachelor's degree or higher (age 25+) | 52.2% ±6.9 pts | 48.9% | no clear change |
| Graduate or professional degree (age 25+) | 16.1% ±4.2 pts | 16.8% | – |
| Lived in the same house a year earlier | 93.1% ±3.7 pts | 90.7% | – |
| Moved from another state in the past year | 2.3% ±3.1 pts | 1.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Okauchee Lake earn?
Half of Okauchee Lake's 1,960 households earn less than $131,170 a year (±$13,505), against $106,076 in Waukesha County and $77,485 in Wisconsin. In 2015-2019 it was $131,176 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Okauchee Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $131,170 ±$13,505 | $106,076 | no clear change |
| Mean household income | $152,703 ±$11,725 | $137,605 | – |
| Per capita income | $63,582 ±$5,132 | $58,126 | no clear change |
| People below the poverty line | 2.3% ±1.8 pts | 5.2% | – |
| Children under 18 below the poverty line | 2.9% ±4.4 pts | 4.9% | – |
| Households receiving SNAP | 0.8% ±0.8 pts | 4.4% | – |
| Households with a computer | 95.7% ±3.7 pts | 96.5% | – |
| Households with a broadband subscription | 94.5% ±3.7 pts | 94.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Okauchee Lake?
Owners occupy 89.1% of Okauchee Lake's occupied homes and renters 10.9%. The median owner-occupied home is valued at $497,500 by its owner (±$49,137). The median renter pays $1,391 a month including utilities.
| Measure | Okauchee Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $497,500 ±$49,137 | $398,200 | no clear change |
| Median gross rent | $1,391 ±$753 | $1,356 | – |
| Renters paying 35% or more of income on rent | 0.0% ±10.8 pts | 35.6% | – |
| Median monthly owner costs, with a mortgage | $2,438 ±$254 | $2,144 | – |
| Owner-occupied homes | 89.1% ±4.3 pts | 76.0% | no clear change |
| Renter-occupied homes | 10.9% ±4.3 pts | 24.0% | – |
| Housing units | 2,324 ±233 | 175,591 | +300 |
| Homeowner vacancy rate | 1.9% ±2.5 pts | 0.3% | – |
| Rental vacancy rate | 0.0% ±10.0 pts | 4.0% | – |
| Single-family detached homes | 85.0% ±4.1 pts | 69.0% | – |
| Mobile homes | 0.3% ±0.5 pts | 0.6% | – |
| Built 2020 or later | 2.7% ±1.9 pts | 1.7% | – |
| Built 2010 to 2019 | 8.3% ±2.4 pts | 8.1% | – |
| Built 1939 or earlier | 14.9% ±5.8 pts | 7.1% | – |
| Households with no vehicle | 3.5% ±3.0 pts | 3.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Okauchee Lake work and get to work?
75.5% of Okauchee Lake's workers drive alone and 18.4% work from home. The average trip to work takes 21.0 minutes.
| Measure | Okauchee Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.5% ±5.2 pts | 66.6% | – |
| Unemployment rate | 1.3% ±1.6 pts | 2.3% | – |
| Drove alone to work | 75.5% ±7.0 pts | 76.1% | – |
| Carpooled | 4.7% ±2.9 pts | 5.1% | – |
| Public transportation | 0.0% ±0.9 pts | 0.2% | – |
| Walked | 0.4% ±0.6 pts | 1.0% | – |
| Worked from home | 18.4% ±6.6 pts | 16.8% | +13.1 pts |
| Mean travel time to work | 21.0 min ±2.1 | 22.6 min | −5.4 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Okauchee Lake?
2 census tracts lie mostly in Okauchee Lake, and 3 more reach into it (2020 census blocks). Their median household incomes run from $102,596 (Tract 2045.04) to $125,703 (Tract 2045.03).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2045.03Waukesha County | 3,116 | $125,703 |
| Tract 2045.04Waukesha County | 2,841 | $102,596 |
| Tract 2041Waukesha County | 6,365 | $148,889 |
| Tract 2037.03Waukesha County | 3,351 | $149,189 |
| Tract 2043.01Waukesha County | 7,250 | $122,992 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Okauchee Lake) · Census block assignment files
How does Okauchee Lake compare with other places in Wisconsin?
Okauchee Lake ranks 39th of 914 places in Wisconsin with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 191st | 914 |
| Residents per square mile | 126th | 914 |
| Median household income | 39th | 914 |
| Per capita income | 47th | 911 |
| Median home value | 27th | 913 |
| Median gross rent | 89th | 825 |
| Bachelor's degree or higher | 47th | 914 |
| Median age | 157th | 914 |
| Owner-occupied share | 353rd | 914 |
| Work from home | 111th | 827 |
| Travel time to work | 654th | 914 |
Okauchee Lake's figures with every place in Wisconsin (CSV)
Every place in Wisconsin, sortable · Compare Okauchee Lake with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Okauchee Lake?
22 of the 57 figures for Okauchee Lake on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Okauchee Lake are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.