Eureka, WI Demographics

A map of Eureka's Population by Race

Eureka, Wisconsin has an estimated population of 167, a dramatic decrease from the 247 recorded in the 2020 Census. The population is 94.0% White, 6.0% Black, 0.0% Asian, 0.0% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of Eureka, with one dot drawn for each person counted by the Census, color-coded by race.

Eureka 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 Eureka, that probability was 17.4% in 2020 and 11.3% in the most recent ACS estimates.

Eureka is ranked the 713th 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). Eureka was ranked the 655th most populous place in the 2020 Census.

Eureka's White Population

157 residents of Eureka, or 94.0% of the population, identify as White. The share of White residents in Eureka is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Eureka ranks 407th statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's White population has declined by an estimated 29.9%. White residents' share of Eureka's population has increased from 90.7% to 94.0%.

Eureka is more White than neighboring Berlin (83% White), Ripon (90% White), and Winneconne (92.1% White). Eureka is less White than neighboring Waukau (98.8% White), and Omro (95.6% White).

Eureka's Black Population

10 residents of Eureka, or 6.0% of the population, identify as Black. The share of Black residents in Eureka is comparable to the share in Wisconsin overall, where 5.9% of the population is Black. Eureka ranks 435th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's Black population has grown by an estimated 900.0%. Black residents' share of Eureka's population has increased from 0.4% to 6.0%.

Eureka is more Black than neighboring Waukau (0% Black), Omro (0% Black), Berlin (0.3% Black), Ripon (0.5% Black), and Winneconne (0.4% Black).

Eureka's Asian Population

0 residents of Eureka, or 0.0% of the population, identify as Asian. The share of Asian residents in Eureka is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Eureka ranks 436th statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's Asian population has declined by an estimated 100.0%. Asian residents' share of Eureka's population has remained roughly unchanged at 0.0%.

Eureka is less Asian than neighboring Omro (0.7% Asian), Berlin (2.4% Asian), Ripon (0.3% Asian), and Winneconne (0.2% Asian).

Eureka's Hispanic Population

0 residents of Eureka, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Eureka is lower than in Wisconsin overall, where 8% of the population is Hispanic. Eureka ranks 327th statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Eureka's population has decreased from 3.6% to 0.0%.

Eureka is less Hispanic than neighboring Omro (0.7% Hispanic), Berlin (11.1% Hispanic), Ripon (5.6% Hispanic), and Winneconne (6.9% Hispanic).

Eureka's Native American/Other Population

0 residents of Eureka, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Eureka is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Eureka ranks 551st statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Eureka's population has remained roughly unchanged at 0.0%.

Eureka is less Native American/Other than neighboring Omro (0.6% Native American/Other), Berlin (0.9% Native American/Other), and Ripon (1.7% Native American/Other).

Eureka's Multiracial Population

0 residents of Eureka, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Eureka is slightly lower than in Wisconsin overall, where 3.7% of the population is Multiracial. Eureka ranks 119th statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Eureka's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Eureka's population has decreased from 4.5% to 0.0%.

Eureka is less Multiracial than neighboring Waukau (1.2% Multiracial), Omro (2.4% Multiracial), Berlin (2.4% Multiracial), Ripon (1.9% Multiracial), and Winneconne (0.3% 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.