Eureka-Arcata, CA, California: Industrial Catholic Metro metro. In 2024, voted D+28%. Republican peak: R+55 in 1904.
Key facts
- 2024 presidential margin
- D+28MIT Election Lab
- Political typology
- Industrial Catholic MetroAkashic typology
- Population
- 134,5412024 5-year
- Median household income
- $61,1602024 5-year
- White (non-Hispanic)
- 72.1%2024 5-year
- Black
- 1.6%2024 5-year
- Hispanic / Latino
- 14.2%2024 5-year
- Peak Democratic margin
- D+34 in 1912MIT Election Lab
- Peak Republican margin
- R+55 in 1904MIT Election Lab
2024 presidential election
Eureka-Arcata, CA
HarrisD+28
Constituent county margins for Eureka-Arcata, CA, CAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
How it voted
Share of the 2024 vote
| Kamala Harris ✓Democratic | 62.0% | 39,800 |
|---|---|---|
| Donald TrumpRepublican | 33.6% | 21,559 |
| OtherAll other candidates | 4.5% | 2,869 |
D+60R+60
1 counties, each filled by 2024 D-vs-R margin.
presidential history
Presidential margin, 1876–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1876 | −18.4% |
| 1880 | −23.8% |
| 1884 | −18.1% |
| 1888 | −15.3% |
| 1892 | −10.5% |
| 1896 | −11.9% |
| 1900 | −37.5% |
| 1904 | −54.7% |
| 1908 | −46.4% |
| 1912 | +33.8% |
| 1916 | −14.9% |
| 1920 | −50.9% |
| 1924 | −49.7% |
| 1928 | −41.4% |
| 1932 | +12.0% |
| 1936 | +27.0% |
| 1940 | +13.0% |
| 1944 | +13.9% |
| 1948 | +1.2% |
| 1952 | −20.3% |
| 1956 | −5.5% |
| 1960 | +6.0% |
| 1964 | +32.7% |
| 1968 | −0.7% |
| 1972 | −2.7% |
| 1976 | +12.6% |
| 1980 | −14.2% |
| 1984 | −4.9% |
| 1988 | +16.0% |
| 1992 | +17.6% |
| 1996 | +8.7% |
| 2000 | +2.9% |
| 2004 | +18.6% |
| 2008 | +28.1% |
| 2012 | +27.1% |
| 2016 | +24.7% |
| 2020 | +33.1% |
| 2024 | +28.4% |
DemocraticRepublican
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 39,800 | 21,559 | 64,228 | ||
| D | 44,768 | 21,770 | 69,424 | ||
| D | 33,200 | 18,373 | 60,014 | ||
| D | 34,457 | 18,825 | 57,686 | ||
| D | 39,692 | 21,713 | 63,968 | ||
| D | 37,988 | 25,714 | 65,886 | ||
| D | 24,851 | 23,219 | 55,972 | ||
| D | 24,628 | 19,803 | 55,757 | ||
| D | 28,854 | 18,299 | 60,021 | ||
| D | 29,781 | 21,460 | 52,146 | ||
| R | 25,217 | 27,832 | 53,891 | ||
| R | 17,113 | 24,047 | 48,692 | ||
| D | 23,500 | 18,034 | 43,372 | ||
| R | 21,132 | 22,345 | 45,763 | ||
| R | 16,476 | 16,719 | 36,214 | ||
| D | 25,515 | 12,909 | 38,499 | ||
| D | 20,391 | 18,074 | 38,691 | ||
| R | 17,025 | 19,019 | 36,177 | ||
| R | 12,490 | 18,913 | 31,687 | ||
| D | 11,268 | 10,979 | 23,266 | ||
| D | 12,083 | 9,127 | 21,260 | ||
| D | 12,329 | 9,470 | 22,024 | ||
| D | 11,909 | 6,808 | 18,925 | ||
| D | 8,723 | 6,795 | 16,095 | ||
| R | 3,726 | 9,162 | 13,135 | ||
| R | 845 | 6,767 | 11,910 | ||
| R | 1,778 | 6,528 | 9,340 | ||
| R | 4,103 | 5,786 | 11,313 | ||
| O | 2,887 | 0 | 8,552 | ||
| R | 1,206 | 4,221 | 6,492 | ||
| R | 1,249 | 4,930 | 6,733 | ||
| R | 1,698 | 3,902 | 5,884 | ||
| R | 2,465 | 3,142 | 5,675 | ||
| R | 1,844 | 2,416 | 5,426 | ||
| R | 2,014 | 2,772 | 4,956 | ||
| R | 1,450 | 2,184 | 4,053 | ||
| R | 735 | 1,420 | 2,881 | ||
| R | 1,127 | 1,637 | 2,765 |
Demographics
2024 ACS
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
13.4%
English
12.8%
Irish
11.8%
Italian
5.5%
Scottish
3.4%
French
2.8%
American
2.3%
Source · American Community Survey 5-year estimates, 2024 release. Hispanic/Latino is an ethnicity that overlaps the race categories, so these shares can total more than 100%. Ancestry is a self-reported, multiple-response item; ancestry percentages do not sum to the parent race percentage.
2024 ACS
Age distribution by sex
Median age: 39.9 in this county, 39.1 nationally
Male
Age
Female
85+
75–84
65–74
55–64
45–54
35–44
25–34
18–24
5–17
<5
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Median household income
Inflation-adjusted dollars
$61,160
Eureka-Arcata, CA ranks near the middle of US counties.
Eureka-Arcata, CA$61,160
California$99,122
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Poverty rate
All persons below federal poverty line
18.7%
Children face moderate poverty.
Children under 1817.5%
Working age (18–64)19.5%
Seniors (65+)13.5%
Source · American Community Survey 5-year estimates, 2024 release.
2024 ACS
Language at home
Population aged 5 and older
88.9%
speak English only
Spanish6.8%
Asian & Pacific Islander2.3%
Other Indo-European1.5%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
2020 religion census
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 80.7% of residents not counted as adherents by any reporting body.
Anchored by Humboldt State University and the timber-to-tourism economic shift, the Eureka-Arcata metro consistently posts among California's strongest margins for environmental and progressive ballot measures, driven by a younger, college-educated population relative to its rural surroundings.
Across the recorded series it reached a Democratic high of thirty-four points in 1912 and a Republican high of fifty-five points in 1904. Between 2020 and 2024 the metro moved five points toward the Republican candidate; the 2024 margin was twenty-eight points.
A population of 134,541, a 72% non-Hispanic-white share, and a median household income of $61,160 describe the metro.
Compare two places, side by side
Twelve curated comparisons line up election history, demographics, and the divergence story for two places at a glance. Browse all comparisons →
Cite this page
All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
Eureka-Arcata, CA, California. Akashic. https://akashic.app/cbsa/21700/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did Eureka-Arcata, CA, California vote in 2024?
In 2024, Eureka-Arcata, CA, California voted Democratic by 28.4 points (D+28), carried by the Democratic candidate. Out of 64,228 votes cast, 39,800 went Democratic and 21,559 went Republican.
What is Eureka-Arcata, CA, California's political typology?
Akashic places Eureka-Arcata, CA, California in the "Industrial Catholic Metro" typology. The typology is a data-driven cluster built from vote share, vote swing, race and ethnicity, income, language spoken at home, religion, and ancestry. Across 38 elections in the dataset, the metro has voted Democratic 18 times, Republican 19 times, and other 1 times.
When did Eureka-Arcata, CA, California last vote Republican?
The most recent presidential election in which Eureka-Arcata, CA, California voted Republican was 1984.
How many people live in Eureka-Arcata, CA, California?
Eureka-Arcata, CA, California has a population of 134,541 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Eureka-Arcata, CA, California?
Median household income in Eureka-Arcata, CA, California is $61,160 — below the national median of $80,734. The California state median is $99,122.
What is the political history of Eureka-Arcata, CA, California?
Akashic tracks 38 presidential elections in Eureka-Arcata, CA, California from 1876 to 2024. Of those, 18 went Democratic and 19 went Republican. The metro's typology — "Industrial Catholic Metro" — captures where that record, its demographics, and its recent swing place it among American communities.