Eureka Population

1850–2026

25,044

2026 projection

5.4% since 2020 (decrease)

05K10K15K20K25K30K186018801900192019401960198020002020

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for Eureka. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202625,044-2601.03%
202525,304-1290.51%
202425,433-2911.13%
202325,724-3421.31%
202226,066-3021.15%
202126,368-1030.39%
202026,471-3621.35%
201926,833-1760.65%
201827,009-1130.42%
201727,12200.00%

Showing 10 of 31 years.

Eureka Demographics

39.1median age

Median age

Female39 yrs
Male39.1 yrs

Adults

21,000
4,340 seniors · 21%16,660 other adults

Sex

Female 49.8% · 12,949Male 50.2% · 13,061

Population by age

MaleFemale85+ years, male: 9485+ years, female: 13280–84 years, male: 9480–84 years, female: 27175–79 years, male: 36975–79 years, female: 53170–74 years, male: 66670–74 years, female: 85865–69 years, male: 62165–69 years, female: 70460–64 years, male: 75460–64 years, female: 74055–59 years, male: 61955–59 years, female: 70650–54 years, male: 88550–54 years, female: 83745–49 years, male: 1,13245–49 years, female: 50140–44 years, male: 1,04440–44 years, female: 96335–39 years, male: 1,20335–39 years, female: 1,07030–34 years, male: 98630–34 years, female: 94225–29 years, male: 1,00225–29 years, female: 86520–24 years, male: 85920–24 years, female: 1,06315–19 years, male: 49815–19 years, female: 67110–14 years, male: 71710–14 years, female: 7985–9 years, male: 9275–9 years, female: 4930–4 years, male: 5910–4 years, female: 80485+80–8475–7970–7465–6960–6455–5950–5445–4940–4435–3930–3425–2920–2415–1910–145–90–45005001K1K

Hover or tap an age group to see exact counts. Use the up and down arrow keys to inspect age groups.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 260 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

Eureka Income

$57,662median household income

Median household income

$57,662

Half of households earn more, half earn less

Median earnings

$39,487

Typical yearly pay for a worker 25 or older.

Poverty rate

18.1%

About 1 in 6 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

Eureka Marital Status

33% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married33%35%32%
Never married43%47%39%
Divorced17%17%18%
Widowed4%<1%8%
Separated2%1%3%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201

Sources

10 sources, all from the U.S. Census Bureau

Population

American Community Survey, 2024 5-year