† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
1 counties by 2024 margin · County returns · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupEureka-Arcata, CACaliforniaUnited States
German13.4%6.8%12.5%
English12.8%6.3%9.5%
Irish11.8%5.9%9.4%
Italian5.5%3.4%4.8%
Scottish3.4%0.9%1.3%
French2.8%1.3%1.6%
American2.3%2.8%5.3%
Portuguese2.2%——
Mexican11.0%32.3%11.3%
Puerto Rican0.6%0.6%1.8%
Spanish0.5%0.3%—
Spaniard0.4%0.3%—
Cuban0.3%—0.7%
Salvadoran0.2%2.0%0.7%
Hmong1.3%0.3%—
Chinese0.5%3.9%1.3%
Filipino0.4%3.3%0.9%
Asian Indian0.2%2.3%1.4%
Pakistani0.2%——
African American†1.1%4.4%9.9%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Eureka-Arcata, CA
California
United States
Median age
39.9
37.9
39.1
Age 18–24
12.1%
9.1%
9.2%
Age 65 and older
19.7%
15.6%
17.2%
Household economy
Measure
Eureka-Arcata, CA
California
United States
Median household income
$61,160
$99,122
$84,427
Poverty rate
18.7%
12.0%
12.5%
Bachelor's degree or higher (25+)
33.1%
36.6%
35.6%
Languages at home
Measure
Eureka-Arcata, CA
California
United States
Speaks a non-English language at home
11.1%
44.4%
22.3%
Spanish
6.8%
28.4%
13.6%
Other Indo-European
1.0%
3.4%
2.0%
Other Asian & Pacific Island
1.3%
2.0%
1.1%
Religious landscape
Measure
Eureka-Arcata, CA
California
United States
Catholic
6.4%
26.2%
18.6%
Evangelical Protestant
5.8%
9.0%
16.5%
Unclaimed / not counted
80.7%
55.2%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Eureka-Arcata, CA
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
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
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
62.0%Harris39,800
33.6%Trump21,559
1.7%Stein1,091 +4
D+28.4
R+4.7
D+29.9
64,228
All 7 candidates in 2024 · 5 minor / independent
Kamala D HarrisDemocratic62.0%39,800
Donald J TrumpRepublican33.6%21,559
Jill SteinIndependent1.7%1,091
Robert F Kennedy Jr.Independent1.5%976
Claudia De La CruzIndependent0.7%467
Chase OliverLibertarian0.5%329
OtherAll other candidates0.0%6
D
64.5%Biden44,768
31.4%Trump21,770
4.2%
D+33.1
D+8.4
D+28.7
69,424
D
55.3%Clinton33,200
30.6%Trump18,373
14.1%
D+24.7
R+2.4
D+22.6
60,014
D
59.7%Obama34,457
32.6%Romney18,825
7.6%
D+27.1
R+1.0
D+23.2
57,686
D
62.0%Obama39,692
33.9%McCain21,713
4.0%
D+28.1
D+9.5
D+20.8
63,968
D
57.7%Kerry37,988
39.0%Bush25,714
3.3%
D+18.6
D+15.7
D+21.1
65,886
D
44.4%Gore24,851
41.5%Bush23,219
14.1%
D+2.9
R+5.7
D+2.4
55,972
D
44.2%Clinton24,628
35.5%Dole19,803
20.3%
D+8.7
R+8.9
D+0.1
55,757
D
48.1%Clinton28,854
30.5%Bush18,299
21.4%
D+17.6
D+1.6
D+12.0
60,021
D
57.1%Dukakis29,781
41.2%Bush21,460
1.7%
D+16.0
D+20.8
D+23.7
52,146
R
46.8%Mondale25,217
51.6%Reagan27,832
1.6%
R+4.9
D+9.4
D+13.4
53,891
R
35.1%Carter17,113
49.4%Reagan24,047
15.5%
R+14.2
R+26.8
R+4.5
48,692
D
54.2%Carter23,500
41.6%Ford18,034
4.2%
D+12.6
D+15.3
D+10.5
43,372
R
46.2%McGovern21,132
48.8%Nixon22,345
5.0%
R+2.7
R+2.0
D+20.5
45,763
R
45.5%Humphrey16,476
46.2%Nixon16,719
8.3%
R+0.7
R+33.4
±0.0
36,214
D
66.3%Johnson25,515
33.5%Goldwater12,909
0.2%
D+32.7
D+26.8
D+10.2
38,499
D
52.7%Kennedy20,391
46.7%Nixon18,074
0.6%
D+6.0
D+11.5
D+5.8
38,691
R
47.1%Stevenson17,025
52.6%Eisenhower19,019
0.4%
R+5.5
D+14.8
D+9.9
36,177
R
39.4%Stevenson12,490
59.7%Eisenhower18,913
0.9%
R+20.3
R+21.5
R+9.5
31,687
D
48.4%Truman11,268
47.2%Dewey10,979
4.4%
D+1.2
R+12.7
R+3.2
23,266
D
56.8%Roosevelt12,083
42.9%Dewey9,127
0.2%
D+13.9
D+0.9
D+6.4
21,260
D
56.0%Roosevelt12,329
43.0%Willkie9,470
1.0%
D+13.0
R+14.0
D+3.0
22,024
D
62.9%Roosevelt11,909
36.0%Landon6,808
1.1%
D+27.0
D+15.0
D+2.7
18,925
D
54.2%Roosevelt8,723
42.2%Hoover6,795
3.6%
D+12.0
D+53.4
R+5.8
16,095
R
28.4%Smith3,726
69.8%Hoover9,162
1.9%
R+41.4
D+8.3
R+23.9
13,135
R
7.1%Davis845
56.8%Coolidge6,767
36.1%
R+49.7
D+1.1
R+24.5
11,910
R
19.0%Cox1,778
69.9%Harding6,528
11.1%
R+50.9
R+36.0
R+24.7
9,340
R
36.3%Wilson4,103
51.1%Hughes5,786
12.6%
R+14.9
R+48.6
R+18.0
11,313
O
33.8%Wilson2,887
0.0%Taft0
66.2%
Roosevelt +32.5
D+80.2
D+14.2
8,552
R
18.6%Bryan1,206
65.0%Taft4,221
16.4%
R+46.4
D+8.2
R+36.9
6,492
R
18.6%Parker1,249
73.2%Roosevelt4,930
8.2%
R+54.7
R+17.2
R+35.0
6,733
R
28.9%Bryan1,698
66.3%McKinley3,902
4.8%
R+37.5
R+25.5
R+29.9
5,884
R
43.4%Bryan2,465
55.4%McKinley3,142
1.2%
R+11.9
R+1.4
R+5.9
5,675
R
34.0%Cleveland1,844
44.5%Harrison2,416
21.5%
R+10.5
—
R+12.2
5,426
Congressional elections · 3 Senate races
U.S. Senate
Source · MIT Election Lab (MEDSL), Senate. CC-BY 4.0.
Year
Won
Democratic
Republican
Total
2024
D
63.8%40,240
36.2%22,793
63,033
2022
D
64.2%30,612
35.8%17,096
47,708
2018
D
100.0%47,655
0.0%0
47,655
voter registration
Registered voters
By party of registration, over time
Party registration · 2024D+21.3
vs
Presidential vote · 2024D+28.4
Registration leans Democratic; the presidential vote runs 7.1 points more Republican.
82,097 registered voters · 2024 · down from 84,267 in 2022
Domestic migration in Eureka-Arcata, CA in Eureka-Arcata, CA: net domestic migration by year
Year
Net domestic migration
2011
−185
2012
−869
2013
−434
2014
−20
2015
+437
2016
+1,026
2017
+137
2018
−231
2019
−625
2021
−1,032
2022
+191
2023
−659
2024
−1,366
2025
−296
Anchored by Humboldt State University and the timber-to-tourism economic shift, the Eureka-Arcata metro consistently posts among California's strongest support for environmental ballot measures, driven by a younger, college-educated population relative to its rural surroundings.
Across the recorded series it reached a Democratic high of 33.8 points in 1912 and a Republican high of 54.7 points in 1904. Between 2020 and 2024 the metro moved 4.7 points toward the Republican candidate; the 2024 margin was 28.4 points.
A population of 134,541, a 70% non-Hispanic-white share, and a median household income of $61,160 describe the metro. The metro's voting pattern over the last decade is most similar to that of Eugene-Springfield, OR and Corvallis, OR.
Akashic
Political twins — metros
The metros whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
Twin score (0–100) = weighted cosine between tier-standardized fingerprints: presidential margins 2000–2024 with 12-yr trend and elasticity, ACS income, age, education, population and race, top reported ancestries, and religious adherence — chips name the closest-shared dimensions and the widest gap. Re-weight the groups in the twins explorer.
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.
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How did Eureka-Arcata, CA, California vote in 2024?
In 2024, Eureka-Arcata, CA, California voted Democratic by 28.4 points (D+28.4), carried by the Democratic candidate. Out of 64,228 votes cast, 39,800 went Democratic and 21,559 went Republican.
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 34 presidential elections in Eureka-Arcata, CA, California from 1892 to 2024. Of those, 18 went Democratic and 15 went Republican.
