Eureka, MO Demographics

A map of Eureka's Population by Race

Eureka, Missouri has an estimated population of 13,081, a large increase from the 11,646 recorded in the 2020 Census. The population is 85.6% White, 7.7% Multiracial, 3.0% Hispanic, 2.2% Asian, 0.8% Black, and 0.7% Native American/Other. 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 more racially diverse since the 2020 Census. It is considerably less diverse than Missouri 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 18.9% in 2020 and 26.0% in the most recent ACS estimates.

Eureka is ranked the 69th most populous place in Missouri, out of 1,082 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 76th most populous place in the 2020 Census.

Eureka's White Population

11,195 residents of Eureka, or 85.6% of the population, identify as White. The share of White residents in Eureka is higher than in Missouri overall, where 76.3% of the population is White. Eureka ranks 518th statewide in terms of White residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's White population has grown by an estimated 6.9%. White residents' share of Eureka's population has decreased from 89.9% to 85.6%.

Eureka is more White than neighboring Wildwood (82.7% White), Byrnes Mill (85.4% White), and Pacific (79.7% White). Eureka is less White than neighboring Lake Tekakwitha (87.1% White), and LaBarque Creek (86.4% White).

Eureka's Black Population

105 residents of Eureka, or 0.8% of the population, identify as Black. The share of Black residents in Eureka is considerably lower than in Missouri overall, where 10.9% of the population is Black. Eureka ranks 460th statewide in terms of Black residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's Black population has grown by an estimated 10.5%. Black residents' share of Eureka's population has remained roughly unchanged at 0.8%.

Eureka is more Black than neighboring Wildwood (0.6% Black), and LaBarque Creek (0.1% Black). Eureka is less Black than neighboring Lake Tekakwitha (2% Black), Byrnes Mill (1.9% Black), and Pacific (6.7% Black).

Eureka's Asian Population

292 residents of Eureka, or 2.2% of the population, identify as Asian. The share of Asian residents in Eureka is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Eureka ranks 125th statewide in terms of Asian residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's Asian population has grown by an estimated 61.3%. Asian residents' share of Eureka's population has increased from 1.6% to 2.2%.

Eureka is more Asian than neighboring Lake Tekakwitha (0% Asian), LaBarque Creek (0.5% Asian), Byrnes Mill (0% Asian), and Pacific (0.1% Asian). Eureka is less Asian than neighboring Wildwood (6.6% Asian).

Eureka's Hispanic Population

392 residents of Eureka, or 3.0% of the population, identify as Hispanic. The share of Hispanic residents in Eureka is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Eureka ranks 330th statewide in terms of Hispanic residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's Hispanic population has grown by an estimated 1.0%. Hispanic residents' share of Eureka's population has remained roughly unchanged at 3.0%.

Eureka is more Hispanic than neighboring Lake Tekakwitha (0% Hispanic), Byrnes Mill (0.4% Hispanic), and Pacific (2.3% Hispanic). Eureka is less Hispanic than neighboring Wildwood (4.4% Hispanic), and LaBarque Creek (7.5% Hispanic).

Eureka's Native American/Other Population

92 residents of Eureka, or 0.7% 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 Missouri overall, where 0.7% of the population is Native American/Other. Eureka ranks 779th statewide in terms of Native American/Other residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's Native American/Other population has grown by an estimated 300.0%. Native American/Other residents' share of Eureka's population has remained roughly unchanged at 0.7%.

Eureka is more Native American/Other than neighboring Wildwood (0.6% Native American/Other), Byrnes Mill (0% Native American/Other), and Pacific (0.4% Native American/Other). Eureka is less Native American/Other than neighboring Lake Tekakwitha (2.5% Native American/Other), and LaBarque Creek (5.6% Native American/Other).

Eureka's Multiracial Population

1,005 residents of Eureka, or 7.7% of the population, identify as Multiracial. The share of Multiracial residents in Eureka is slightly higher than in Missouri overall, where 4.8% of the population is Multiracial. Eureka ranks 638th statewide in terms of Multiracial residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Eureka's Multiracial population has grown by an estimated 105.1%. Multiracial residents' share of Eureka's population has increased from 4.2% to 7.7%.

Eureka is more Multiracial than neighboring Wildwood (5.1% Multiracial), and LaBarque Creek (0% Multiracial). Eureka is less Multiracial than neighboring Lake Tekakwitha (8.4% Multiracial), Byrnes Mill (12.2% Multiracial), and Pacific (10.7% 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.