Village · Wisconsin
Oconomowoc Lake, Wisconsin
Oconomowoc Lake, village, in Waukesha County, Wisconsin. Oconomowoc Lake had 570 residents on July 1, 2025 by the Census Bureau's estimate, down 0.3% since 2020; the 2020 Census counted 566 and the ACS 2020-2024 5-year estimates put it at 669 (±187). GEOID 5559300.
Residents, July 2025 estimate
570
Census Bureau estimate (no margin published)
2020 Census count: 566 · ACS 2020-2024: 669 ±187
Median household income
$250,000 or more
The survey's top or bottom value; no margin is published
Wisconsin: $77,485
Median home value
$1,210,900
±$375,265 (90% margin)
Wisconsin: $266,500
Median gross rent
not published
Wisconsin: $1,087
Where is Oconomowoc Lake and what county is it in?
Oconomowoc Lake is a village in Waukesha County, Wisconsin. It covers 1.9 square miles of land, 295 residents per square mile in 2020.
Oconomowoc Lake is in the Milwaukee-Waukesha, WI metropolitan statistical area, which takes in 4 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Oconomowoc Lake, and is it growing?
The Census Bureau estimates that 570 people lived in Oconomowoc Lake on July 1, 2025, down 0.3% since 2020, while Wisconsin grew 1.3%. The 2020 Census counted 566 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 669 (±187).
| Measure | Oconomowoc Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 669 ±187 | 411,762 | no clear change |
| Households | 236 ±62 | 168,658 | no clear change |
| Average household size | 2.83 ±0.63 | 2.42 | no clear change |
| Housing units | 312 ±74 | 175,591 | no clear change |
Oconomowoc Lake's population since 2000
From 564 in 2000 to 570 in 2025: up 1.1%. The 2000, 2010 and 2020 figures are census counts, each for Oconomowoc Lake as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
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 Oconomowoc Lake?
The median resident of Oconomowoc Lake is 55.1 years old; 14.8% are under 18 and 26.0% are 65 or older. The largest group is non-Hispanic white residents at 80.9%, then non-Hispanic residents of some other race at 12.4%.
| Measure | Oconomowoc Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 55.1 ±6.8 | 43.5 | no clear change |
| Under 18 years | 14.8% ±6.8 pts | 21.0% | – |
| 65 years and over | 26.0% ±16.6 pts | 20.5% | – |
| Male | 41.9% ±8.6 pts | 49.6% | – |
| Hispanic or Latino (any race) | 4.9% ±6.0 pts | 5.7% | – |
| White alone, not Hispanic | 80.9% ±17.3 pts | 85.0% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±3.3 pts | 1.5% | – |
| Asian alone, not Hispanic | 0.9% ±1.2 pts | 3.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±3.3 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.3 pts | 0.0% | – |
| Two or more races, not Hispanic | 0.9% ±1.3 pts | 3.2% | – |
| Some other race alone, not Hispanic | 12.4% ±17.6 pts | 0.5% | – |
| Born outside the United States | 5.8% ±4.5 pts | 5.5% | – |
| Speak a language other than English at home (age 5+) | 4.6% ±4.3 pts | 7.7% | – |
| Civilian veterans (age 18+) | 3.9% ±2.7 pts | 5.5% | – |
| With a disability | 4.0% ±2.2 pts | 9.7% | – |
| No health insurance coverage | 0.7% ±1.3 pts | 3.1% | – |
| High school graduate or higher (age 25+) | 98.3% ±2.4 pts | 97.2% | – |
| Bachelor's degree or higher (age 25+) | 72.8% ±13.5 pts | 48.9% | no clear change |
| Graduate or professional degree (age 25+) | 38.4% ±17.4 pts | 16.8% | – |
| Lived in the same house a year earlier | 90.0% ±5.6 pts | 90.7% | – |
| Moved from another state in the past year | 2.4% ±3.8 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 Oconomowoc Lake earn?
Half of Oconomowoc Lake's 236 households earn less than $250,000 or more a year (), against $106,076 in Waukesha County and $77,485 in Wisconsin. In 2015-2019 it was $250,000 or more in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Oconomowoc Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $250,000 or more | $106,076 | no clear change |
| Mean household income | $337,728 ±$62,837 | $137,605 | – |
| Per capita income | $125,485 ±$26,556 | $58,126 | no clear change |
| People below the poverty line | 3.6% ±3.7 pts | 5.2% | – |
| Children under 18 below the poverty line | 3.0% ±4.7 pts | 4.9% | – |
| Households receiving SNAP | 0.0% ±9.1 pts | 4.4% | – |
| Households with a computer | 100.0% ±9.1 pts | 96.5% | – |
| Households with a broadband subscription | 97.9% ±2.5 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 Oconomowoc Lake?
Owners occupy 97.9% of Oconomowoc Lake's occupied homes and renters 2.1%. The median owner-occupied home is valued at $1,210,900 by its owner (±$375,265).
| Measure | Oconomowoc Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $1,210,900 ±$375,265 | $398,200 | no clear change |
| Renters paying 35% or more of income on rent | 0.0% ±100.0 pts | 35.6% | – |
| Median monthly owner costs, with a mortgage | $4,000 or more | $2,144 | – |
| Owner-occupied homes | 97.9% ±2.5 pts | 76.0% | +8.1 pts |
| Renter-occupied homes | 2.1% ±2.5 pts | 24.0% | – |
| Housing units | 312 ±74 | 175,591 | no clear change |
| Homeowner vacancy rate | 1.3% ±1.9 pts | 0.3% | – |
| Rental vacancy rate | 0.0% ±100.0 pts | 4.0% | – |
| Single-family detached homes | 96.2% ±3.9 pts | 69.0% | – |
| Mobile homes | 0.0% ±7.0 pts | 0.6% | – |
| Built 2020 or later | 3.5% ±4.4 pts | 1.7% | – |
| Built 2010 to 2019 | 10.6% ±8.8 pts | 8.1% | – |
| Built 1939 or earlier | 14.4% ±6.1 pts | 7.1% | – |
| Households with no vehicle | 1.3% ±2.0 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 many new homes is Oconomowoc Lake building?
Builders took permits for 2 new housing units in Oconomowoc Lake in 2025 (2 in single-family houses), 3.5 per 1,000 residents against 4.3 across Wisconsin.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Oconomowoc Lake work and get to work?
73.2% of Oconomowoc Lake's workers drive alone and 17.9% work from home. The average trip to work takes 23.1 minutes.
| Measure | Oconomowoc Lake | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 71.1% ±9.2 pts | 66.6% | – |
| Unemployment rate | 1.0% ±2.1 pts | 2.3% | – |
| Drove alone to work | 73.2% ±11.1 pts | 76.1% | – |
| Carpooled | 7.7% ±4.6 pts | 5.1% | – |
| Public transportation | 0.0% ±5.3 pts | 0.2% | – |
| Walked | 0.0% ±5.3 pts | 1.0% | – |
| Worked from home | 17.9% ±8.6 pts | 16.8% | no clear change |
| Mean travel time to work | 23.1 min ±3.3 | 22.6 min | no clear change |
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 Oconomowoc Lake?
No census tract lies mostly in Oconomowoc Lake; 5 tracts reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2041Waukesha County | 6,365 | $148,889 |
| Tract 2043.01Waukesha County | 7,250 | $122,992 |
| Tract 2043.02Waukesha County | 4,084 | $87,473 |
| Tract 2045.03Waukesha County | 3,116 | $125,703 |
| Tract 2037.03Waukesha County | 3,351 | $149,189 |
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 Oconomowoc Lake) · Census block assignment files
How does Oconomowoc Lake compare with other places in Wisconsin?
By the Census Bureau's July 2025 estimates, Oconomowoc Lake is the 12,673rd-most populous of the 19,476 U.S. incorporated places that have one and the 458th-most populous of 608 in Wisconsin.
Oconomowoc Lake is not ranked by income or the other survey measures: those rankings include places of 1,000 or more residents (2020 Census) with a reliable estimate.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 458th | 608 |
Oconomowoc Lake's figures with every place in Wisconsin (CSV)
Every place in Wisconsin, sortable · Compare Oconomowoc 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 Oconomowoc Lake?
26 of the 56 figures for Oconomowoc 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 Oconomowoc 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' public schools in Oconomowoc Lake.