City · Wisconsin
Oconomowoc, Wisconsin
Oconomowoc, city, in Waukesha County, Wisconsin. Oconomowoc had 20,119 residents on July 1, 2025 by the Census Bureau's estimate, up 10.7% since 2020; the 2020 Census counted 18,203 and the ACS 2020-2024 5-year estimates put it at 19,080 (±55). GEOID 5559250.
Residents, July 2025 estimate
20,119
Census Bureau estimate (no margin published)
2020 Census count: 18,203 · ACS 2020-2024: 19,080 ±55
Median household income
$106,425
±$11,751 (90% margin)
Wisconsin: $77,485
Median home value
$394,500
±$18,074 (90% margin)
Wisconsin: $266,500
Median gross rent
$1,301
±$70 (90% margin)
Wisconsin: $1,087
Where is Oconomowoc and what county is it in?
Oconomowoc is a city in Waukesha County, Wisconsin. It covers 11.8 square miles of land, 1,540 residents per square mile in 2020.
Oconomowoc 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, and is it growing?
The Census Bureau estimates that 20,119 people lived in Oconomowoc on July 1, 2025, up 10.7% since 2020, faster than Wisconsin (+1.3%). The 2020 Census counted 18,203 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 19,080 (±55).
| Measure | Oconomowoc | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 19,080 ±55 | 411,762 | +2,382 |
| Households | 7,833 ±252 | 168,658 | +1,026 |
| Average household size | 2.40 ±0.08 | 2.42 | no clear change |
| Housing units | 8,025 ±294 | 175,591 | +882 |
Oconomowoc's population since 2000
From 12,382 in 2000 to 20,119 in 2025: up 62.5%. The 2000, 2010 and 2020 figures are census counts, each for Oconomowoc 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?
The median resident of Oconomowoc is 42.6 years old; 20.7% are under 18 and 19.9% are 65 or older. The largest group is non-Hispanic white residents at 93.9%, then Hispanic or Latino residents (of any race) at 3.6%. 1.5% of residents were born outside the United States.
| Measure | Oconomowoc | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.6 ±2.6 | 43.5 | no clear change |
| Under 18 years | 20.7% ±1.8 pts | 21.0% | – |
| 65 years and over | 19.9% ±2.3 pts | 20.5% | – |
| Male | 47.7% ±1.9 pts | 49.6% | – |
| Hispanic or Latino (any race) | 3.6% ±1.4 pts | 5.7% | no clear change |
| White alone, not Hispanic | 93.9% ±1.7 pts | 85.0% | no clear change |
| Black or African American alone, not Hispanic | 0.3% ±0.2 pts | 1.5% | – |
| Asian alone, not Hispanic | 0.4% ±0.4 pts | 3.9% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.2% ±0.2 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.1% ±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 1.4% ±0.6 pts | 3.2% | – |
| Some other race alone, not Hispanic | 0.1% ±0.1 pts | 0.5% | – |
| Born outside the United States | 1.5% ±0.6 pts | 5.5% | no clear change |
| Speak a language other than English at home (age 5+) | 3.2% ±1.6 pts | 7.7% | – |
| Civilian veterans (age 18+) | 6.3% ±1.9 pts | 5.5% | – |
| With a disability | 11.0% ±2.1 pts | 9.7% | – |
| No health insurance coverage | 3.7% ±1.5 pts | 3.1% | no clear change |
| High school graduate or higher (age 25+) | 97.9% ±0.7 pts | 97.2% | – |
| Bachelor's degree or higher (age 25+) | 48.4% ±3.3 pts | 48.9% | no clear change |
| Graduate or professional degree (age 25+) | 14.3% ±1.8 pts | 16.8% | – |
| Lived in the same house a year earlier | 84.9% ±3.2 pts | 90.7% | – |
| Moved from another state in the past year | 2.0% ±0.8 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 earn?
Half of Oconomowoc's 7,833 households earn less than $106,425 a year (±$11,751), against $106,076 in Waukesha County and $77,485 in Wisconsin. In 2015-2019 it was $109,116 in 2024 dollars; the margins of error cannot tell the two periods apart. 7.7% of residents live below the poverty line.
| Measure | Oconomowoc | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $106,425 ±$11,751 | $106,076 | no clear change |
| Mean household income | $128,184 ±$8,321 | $137,605 | – |
| Per capita income | $53,735 ±$3,220 | $58,126 | no clear change |
| People below the poverty line | 7.7% ±2.1 pts | 5.2% | no clear change |
| Children under 18 below the poverty line | 6.9% ±3.6 pts | 4.9% | no clear change |
| Households receiving SNAP | 6.6% ±2.9 pts | 4.4% | – |
| Households with a computer | 97.3% ±1.0 pts | 96.5% | – |
| Households with a broadband subscription | 94.7% ±1.4 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?
Owners occupy 69.1% of Oconomowoc's occupied homes and renters 30.9%. The median owner-occupied home is valued at $394,500 by its owner (±$18,074). The median renter pays $1,301 a month including utilities, and 47.9% of renters pay 35% or more of their income on rent.
| Measure | Oconomowoc | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $394,500 ±$18,074 | $398,200 | +$75,504 |
| Median gross rent | $1,301 ±$70 | $1,356 | +$105 |
| Renters paying 35% or more of income on rent | 47.9% ±9.1 pts | 35.6% | +14.2 pts |
| Median monthly owner costs, with a mortgage | $2,193 ±$90 | $2,144 | – |
| Owner-occupied homes | 69.1% ±3.8 pts | 76.0% | no clear change |
| Renter-occupied homes | 30.9% ±3.8 pts | 24.0% | – |
| Housing units | 8,025 ±294 | 175,591 | +882 |
| Homeowner vacancy rate | 0.0% ±0.4 pts | 0.3% | – |
| Rental vacancy rate | 4.7% ±4.3 pts | 4.0% | – |
| Single-family detached homes | 63.9% ±3.2 pts | 69.0% | – |
| Mobile homes | 0.1% ±0.1 pts | 0.6% | – |
| Built 2020 or later | 2.1% ±1.0 pts | 1.7% | – |
| Built 2010 to 2019 | 18.3% ±3.9 pts | 8.1% | – |
| Built 1939 or earlier | 13.5% ±2.5 pts | 7.1% | – |
| Households with no vehicle | 3.5% ±1.1 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 building?
Builders took permits for 218 new housing units in Oconomowoc in 2025 (154 in single-family houses), 10.8 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 work and get to work?
74.9% of Oconomowoc's workers drive alone and 18.2% work from home. The average trip to work takes 24.6 minutes. The unemployment rate in 2020-2024 averaged 2.2%.
| Measure | Oconomowoc | Waukesha County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 67.0% ±2.9 pts | 66.6% | – |
| Unemployment rate | 2.2% ±1.2 pts | 2.3% | no clear change |
| Drove alone to work | 74.9% ±3.8 pts | 76.1% | – |
| Carpooled | 4.6% ±2.2 pts | 5.1% | – |
| Public transportation | 0.2% ±0.2 pts | 0.2% | – |
| Walked | 1.2% ±0.6 pts | 1.0% | – |
| Worked from home | 18.2% ±3.0 pts | 16.8% | +12.6 pts |
| Mean travel time to work | 24.6 min ±2.0 | 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?
4 census tracts lie mostly in Oconomowoc, and 2 more reach into it (2020 census blocks). Their median household incomes run from $53,641 (Tract 2042.01) to $128,065 (Tract 2042.02).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 2043.01Waukesha County | 7,250 | $122,992 |
| Tract 2042.02Waukesha County | 4,359 | $128,065 |
| Tract 2043.02Waukesha County | 4,084 | $87,473 |
| Tract 2042.01Waukesha County | 2,941 | $53,641 |
| Tract 2041Waukesha County | 6,365 | $148,889 |
| Tract 2044Waukesha County | 2,003 | $103,839 |
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) · Census block assignment files
How does Oconomowoc compare with other places in Wisconsin?
By the Census Bureau's July 2025 estimates, Oconomowoc is the 1,934th-most populous of the 19,476 U.S. incorporated places that have one and the 43rd-most populous of 608 in Wisconsin.
Oconomowoc ranks 170th of 914 places in Wisconsin with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 43rd | 608 |
| Growth 2020-2025 (PEP) | 27th | 884 |
| Residents per square mile | 106th | 914 |
| Median household income | 170th | 914 |
| Per capita income | 144th | 911 |
| Median home value | 118th | 913 |
| Median gross rent | 133rd | 825 |
| Poverty rate | 333rd | 706 |
| Bachelor's degree or higher | 70th | 914 |
| Median age | 546th | 914 |
| Owner-occupied share | 701st | 914 |
| Work from home | 114th | 827 |
| Travel time to work | 389th | 914 |
Oconomowoc's figures with every place in Wisconsin (CSV)
Every place in Wisconsin, sortable · Compare Oconomowoc 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?
9 of the 57 figures for Oconomowoc 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 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.