Oconomowoc, WI Demographics

A map of Oconomowoc's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	17,919	16,471	93.9%	90.5%
Hispanic	686	772	3.6%	4.2%
Multiracial	271	561	1.4%	3.1%
Asian	80	211	0.4%	1.2%
Native American/Other	74	65	0.4%	0.4%
Black	50	123	0.3%	0.7%

Oconomowoc, Wisconsin has an estimated population of 19,080, an increase from the 18,203 recorded in the 2020 Census. The population is 93.9% White, 3.6% Hispanic, 1.4% Multiracial, 0.4% Asian, 0.4% Native American/Other, and 0.3% Black. This demographic dot map shows the population of Oconomowoc, with one dot drawn for each person counted by the Census, color-coded by race.

Oconomowoc has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than Wisconsin overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Oconomowoc, that probability was 17.8% in 2020 and 11.7% in the most recent ACS estimates.

Oconomowoc is ranked the 44th most populous place in Wisconsin, out of 808 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Oconomowoc was ranked the 48th most populous place in the 2020 Census.

Oconomowoc's White Population

17,919 residents of Oconomowoc, or 93.9% of the population, identify as White. The share of White residents in Oconomowoc is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Oconomowoc ranks 422nd statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's White population has grown by an estimated 8.8%. White residents' share of Oconomowoc's population has increased from 90.5% to 93.9%.

Oconomowoc is more White than neighboring Oconomowoc Lake (80.9% White), Summit (90.4% White), Lac La Belle (93.8% White), and Nashotah (91.9% White). Oconomowoc is less White than neighboring Okauchee Lake (94.9% White).

Oconomowoc's Black Population

50 residents of Oconomowoc, or 0.3% of the population, identify as Black. The share of Black residents in Oconomowoc is lower than in Wisconsin overall, where 5.9% of the population is Black. Oconomowoc ranks 299th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's Black population has declined by an estimated 59.3%. Black residents' share of Oconomowoc's population has remained roughly unchanged at 0.3%.

Oconomowoc is more Black than neighboring Oconomowoc Lake (0% Black), Summit (0.2% Black), and Nashotah (0% Black). Oconomowoc is less Black than neighboring Lac La Belle (0.4% Black), and Okauchee Lake (0.8% Black).

Oconomowoc's Asian Population

80 residents of Oconomowoc, or 0.4% of the population, identify as Asian. The share of Asian residents in Oconomowoc is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Oconomowoc ranks 177th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's Asian population has declined by an estimated 62.1%. Asian residents' share of Oconomowoc's population has decreased from 1.2% to 0.4%.

Oconomowoc is more Asian than neighboring Lac La Belle (0% Asian), and Okauchee Lake (0.2% Asian). Oconomowoc is less Asian than neighboring Oconomowoc Lake (0.9% Asian), Summit (0.7% Asian), and Nashotah (2.4% Asian).

Oconomowoc's Hispanic Population

686 residents of Oconomowoc, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Oconomowoc is slightly lower than in Wisconsin overall, where 8% of the population is Hispanic. Oconomowoc ranks 272nd statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's Hispanic population has declined by an estimated 11.1%. Hispanic residents' share of Oconomowoc's population has decreased from 4.2% to 3.6%.

Oconomowoc is more Hispanic than neighboring Summit (2.7% Hispanic), Lac La Belle (2.3% Hispanic), Okauchee Lake (2.6% Hispanic), and Nashotah (1.8% Hispanic). Oconomowoc is less Hispanic than neighboring Oconomowoc Lake (4.9% Hispanic).

Oconomowoc's Native American/Other Population

74 residents of Oconomowoc, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Oconomowoc is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Oconomowoc ranks 582nd statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's Native American/Other population has grown by an estimated 13.8%. Native American/Other residents' share of Oconomowoc's population has remained roughly unchanged at 0.4%.

Oconomowoc is more Native American/Other than neighboring Lac La Belle (0% Native American/Other), Okauchee Lake (0% Native American/Other), and Nashotah (0% Native American/Other). Oconomowoc is less Native American/Other than neighboring Oconomowoc Lake (12.4% Native American/Other), and Summit (0.8% Native American/Other).

Oconomowoc's Multiracial Population

271 residents of Oconomowoc, or 1.4% of the population, identify as Multiracial. The share of Multiracial residents in Oconomowoc is slightly lower than in Wisconsin overall, where 3.7% of the population is Multiracial. Oconomowoc ranks 414th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Oconomowoc's Multiracial population has declined by an estimated 51.7%. Multiracial residents' share of Oconomowoc's population has decreased from 3.1% to 1.4%.

Oconomowoc is more Multiracial than neighboring Oconomowoc Lake (0.9% Multiracial). Oconomowoc is less Multiracial than neighboring Summit (5.2% Multiracial), Lac La Belle (3.5% Multiracial), Okauchee Lake (1.5% Multiracial), and Nashotah (3.9% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.