† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupOconomowocWisconsinUnited States
German47.0%35.8%12.5%
Irish13.9%10.4%9.4%
Polish13.1%7.6%2.2%
English8.0%6.7%9.5%
Italian6.3%2.7%4.8%
American4.8%3.4%5.3%
Norwegian4.2%6.1%—
French3.0%2.2%1.6%
Mexican2.3%5.4%11.3%
Puerto Rican0.4%1.1%1.8%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Oconomowoc
Wisconsin
United States
Median age
42.6
40.5
39.1
Age 18–24
8.0%
9.3%
9.2%
Age 65 and older
19.9%
18.5%
17.2%
Household economy
Measure
Oconomowoc
Wisconsin
United States
Median household income
$106,425
$77,485
$84,427
Poverty rate
7.7%
10.6%
12.5%
Bachelor's degree or higher (25+)
48.4%
33.5%
35.6%
Languages at home
Measure
Oconomowoc
Wisconsin
United States
Speaks a non-English language at home
3.2%
9.1%
22.3%
Spanish
1.0%
5.0%
13.6%
German or other West Germanic
1.7%
0.7%
0.5%
Religious landscape
Measure
Oconomowoc
Wisconsin
United States
Catholic
—
21.0%
18.6%
Evangelical Protestant
—
14.5%
16.5%
Unclaimed / not counted
—
52.0%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Oconomowoc, Wisconsin
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−31.4%
2008
−21.3%
2012
−33.0%
2016
−27.1%
2020
−20.4%
2024
−21.0%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
R
38.9%Harris5,105
59.8%Trump7,855
1.3%
R+21.0
R+0.5
R+19.5
13,125
R
38.8%Biden4,601
59.3%Trump7,022
1.9%
R+20.4
D+6.7
R+24.9
11,844
R
33.1%Clinton3,262
60.2%Trump5,935
6.7%
R+27.1
D+5.9
R+29.2
9,862
R
33.1%Obama3,189
66.0%Romney6,369
0.9%
R+33.0
R+11.7
R+36.8
9,648
R
38.8%Obama3,588
60.1%McCain5,559
1.1%
R+21.3
D+10.1
R+28.6
9,250
R
34.2%Kerry3,093
65.7%Bush5,931
0.1%
R+31.4
—
R+29.0
9,034
Oconomowoc sits in reliably Republican Waukesha County, but rapid residential expansion along its lake corridor has introduced a more competitive demographic mix into local and legislative contests.
Across the recorded series it reached a Republican high of 33.0 points in 2012. Between 2020 and 2024 the city moved 0.5 points toward the Republican candidate; the 2024 margin was 21.0 points.
A population of 19,080, a 96% non-Hispanic-white share, and a median household income of $106,425 describe the city. The city's voting pattern over the last decade is most similar to that of Muskego and Hartland.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
In 2024, Oconomowoc, Wisconsin voted Republican by 21.0 points (R+21.0), carried by the Republican candidate. Out of 13,125 votes cast, 5,105 went Democratic and 7,855 went Republican.
How many people live in Oconomowoc, Wisconsin?
Oconomowoc, Wisconsin has a population of 19,080 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Oconomowoc, Wisconsin?
Median household income in Oconomowoc, Wisconsin is $106,425 — above the national median of $80,734. The Wisconsin state median is $77,485.
What is the political history of Oconomowoc, Wisconsin?
Akashic tracks 6 presidential elections in Oconomowoc, Wisconsin from 2004 to 2024. Of those, 0 went Democratic and 6 went Republican.
