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The total population of Eureka is estimated to be 910 with 401 males (44.07%) and 509 females (55.93%). There are 108 more females than males in Eureka.
The median household income in Eureka was $31,394 in 2021, which marked an a decrease of 2,884(8.41%) from $34,278 in 2020. This income is 42.08% of the U.S. median household income of $74,606 (all incomes in 2022 inflation-adjusted dollars).
Per the latest American Community Survey by the Census Bureau, Eureka sees its highest median household income among householders in the age group of 25 to 44 years old, at $80,528. Overall, the median household income for the city of Eureka stands at $31,394.
In Eureka, the median income for all workers aged 15 years and older, regardless of work hours, was $42,561 for males and $16,964 for females. However, when specifically considering full-time, year-round workers within the same age group, the median income was $62,360 for males and $40,985 for females.
In Eureka, population is primarily represented by White households, reporting a median income of $32,067.
In 2022, the population of Eureka was 794, a 1.12% decrease year-by-year from 2021. Previously, in 2021, Eureka's population was 803, a decline of 0.25% compared to a population of 805 in 2020.
The median age in Eureka, SD is 58.3, as per 2021 ACS 5-Year Estimates. Of the total population, 13.97% were under the age of 15, 17.65% aged 15 to 29, 29.50% aged 30 to 64, 27.15% aged 65 to 84, and 11.73% were 85 years of age and older.
Racial distribution of Eureka population: 92.63% are White, 3.35% are Black or African American, 0.22% are American Indian and Alaska Native, 0.67% are Asian, 0.11% are Native Hawaiian and other Pacific Islander and 3.02% are multiracial.