How did Eureka-Arcata, CA vote in the 2024 presidential election?

Eureka-Arcata, CA voted Democratic in 2024 with a margin of D+28.4. Kamala D Harris received 39,800 votes and Donald Trump received 21,559 out of 64,228 total votes cast, a 5.0-point shift toward Republicans from 2020.

What is Eureka-Arcata, CA's political history?

Eureka-Arcata, CA has 40 presidential elections on record, spanning 1868 to 2024. It has voted Democratic in every presidential election since 1988. The largest single-election swing was 79.1 points in 1912.

What are the demographics of Eureka-Arcata, CA?

Eureka-Arcata, CA has a population of 134,541 according to the 2020 Census. The racial composition is 69.5% non-Hispanic white, 14.2% Hispanic, 1.6% Black. About 33% of residents hold a bachelor's degree or higher. Median household income is $61,160.

Which places are most similar to Eureka-Arcata, CA?

Based on demographic and electoral similarity analysis, the three most similar metro areas to Eureka-Arcata, CA are Eugene-Springfield, OR, Ukiah, CA, Chico, CA. Similarity is computed using a vector embedding of demographic, economic, and electoral characteristics.

Eureka-Arcata, CA

Latest: 2024↓ R+5.0 vs 2020

Safe Democratic — shifted 5.0pp toward Republicans in 2024 — 135K residents — 1 counties

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Race & ancestry

Group	%
▶White (Non-Hispanic)(13)	69.5%
▶Hispanic / Latino(18)	14.2%
▶Black / African American(11)	1.6%
▶Asian(6)	3.1%
▶Middle Eastern / North African(8)	0.3%
▶Native American / Alaska Native(8)	3.9%
▶Native Hawaiian / Pacific Islander(5)	0.3%
Multiracial / Other	7.5%

View full demographics →

Religious adherence

Tradition	% Pop	% Adherents
Catholic	6.5%	33.2%
Evangelical Protestant	5.9%	30.4%
Other	5.3%	27.2%
LDS (Mormon)	2.6%	13.3%
Mainline Protestant	1.7%	8.9%
Non-religious	80.5%	—

View full religion →

Presidential results

Year	Result
2024	Harris+28.4
2020	Biden+33.4
2016	Clinton+24.7
2012	Obama+27.1
2008	Obama+28.1
2004	Kerry+18.6
2000	Gore+2.9
1996	Clinton+8.7
1992	Clinton+17.6

View full election history →

Eureka-Arcata, CA is a metro area that has a population of 134,541. In the 2024 presidential election, it voted Democratic with a margin of D+28.4. Akashic Edge tracks 40 presidential elections here, dating back to 1868.

Eureka-Arcata, CA Presidential Election Results, 1948–2024
Year	Dem %	Rep %	Margin	Swing
2024	62.0%	33.6%	D+28.4	R+5.0
2020	65.0%	31.6%	D+33.4	D+8.7
2016	55.3%	30.6%	D+24.7	R+2.4
2012	59.7%	32.6%	D+27.1	R+1.0
2008	62.0%	33.9%	D+28.1	D+9.5
2004	57.7%	39.0%	D+18.6	D+15.7
2000	44.4%	41.5%	D+2.9	R+5.7
1996	44.2%	35.5%	D+8.7	R+8.9
1992	48.1%	30.5%	D+17.6	D+1.6
1988	57.1%	41.2%	D+16.0	D+20.8
1984	46.8%	51.6%	R+4.9	D+9.4
1980	35.1%	49.4%	R+14.2	R+26.8
1976	54.2%	41.6%	D+12.6	D+15.3
1972	46.2%	48.8%	R+2.7	R+2.0
1968	45.5%	46.2%	R+0.7	R+33.4
1964	66.3%	33.5%	D+32.7	D+26.8
1960	52.7%	46.7%	D+6.0	D+11.5
1956	47.1%	52.6%	R+5.5	D+14.8
1952	39.4%	59.7%	R+20.3	R+21.5
1948	48.4%	47.2%	D+1.2	—

Political Identity

What defines Eureka-Arcata, CA?

It has a moderately diverse, middle-class electorate where education levels and suburban growth shape the partisan balance.

Constituent Counties

Open in Cartographer

Similarity Explorer

Similar metro areas

Nearest neighbors matched on the same place-page feature set used across the dossier system.

8 visible matches

Eugene-Springfield, OR

Educated rural democratic

D+22.9

Similarity score93%

Ukiah, CA

Educated rural democratic

D+26.8

Similarity score91%

Chico, CA

Educated rural competitive

R+3.1

Similarity score90%

Corvallis, OR

Educated rural democratic

D+39.3

Similarity score90%

Lawrence, KS

Educated rural competitive

D+37.6

Similarity score90%

Springfield, MA

Educated rural democratic

D+8.8

Similarity score89%

Pittsfield, MA

Educated rural democratic

D+39.7

Similarity score88%

Bellingham, WA

Educated rural democratic

D+24.7

Similarity score88%

Constituent Geography

Counties in Eureka-Arcata, CA

2024 presidential results across the counties that make up this geography.

Sort:

County	Pop.	Margin	Dem	Rep	Total	Share
Humboldt	135K	D+28.4	39,800	21,559	64,228	100.0%

1 countiesTotal votes: 64,228

Historian Query

Ask the Historian

Explore Eureka-Arcata, CA's political evolution with the Historian

“How has the Eureka-Arcata, CA metro area voted in presidential elections?”

Automated Readout

Key Insights

High-confidence patterns distilled from this geography's election history.

Has voted Democratic in the last 5 presidential elections
Latest election (2024) was a Democratic landslide with a 28.4% margin
Turnout decreased by 4.4 percentage points since the previous presidential election

Race & Ancestry

Who Lives Here

A race-first Census view with ancestry expansion where source coverage is strong enough to support detail.

Eureka-Arcata, CACensus ACS 2024Ancestry detail available

Census race profile

Major Census race and ethnicity groups shown as a share of total population.

Expand rows for ancestry detail

White (Non-Hispanic) 69.5%Hispanic 14.2%Multiracial 7.5%Native American 3.9%Asian 3.1%Black 1.6%Native Hawaiian 0.3%

Group	Eureka-Arcata, CA	National
▶White (Non-Hispanic)(13)	69.5%	57.4%
▶Hispanic / Latino(18)	14.2%	19.3%
Multiracial / Other	7.5%	4.0%
▶Native American / Alaska Native(8)	3.9%	0.9%
▶Asian(6)	3.1%	6.0%
▶Black / African American(11)	1.6%	12.2%
▶Native Hawaiian / Pacific Islander(5)	0.3%	0.2%
▶Middle Eastern / North African(8)	0.3%	0.9%

Method notes

Census treats race and Hispanic/Latino origin as separate questions. Race categories other than Hispanic reflect total populations (small Hispanic overlap in Black, Asian, AIAN, NHPI). “Multiracial / Other” is derived as a non-overlapping remainder.

Click rows to expand ancestry detail. Ancestry from ACS B04006, B03001, B02020, B02016. Totals may differ from race — individuals can report multiple ancestries.

Black / African American (estimated remainder) is derived as Black population share minus reported Sub-Saharan African and West Indian ancestry. It is shown as an estimated ancestry detail, not a standalone Census ancestry category.

MENA estimated from ancestry reporting — Census does not have a separate MENA race category. Not shown in bar (overlaps with other race groups).

Religious Adherents

Population that are religious adherents:

19.5%(26.2K people)

U.S. Religion Census 2020

Browse all religions

Tradition	% Pop	% Adherents	US Pop	US Adherents
Catholic	6.5%	33.2%	—	—
Evangelical Protestant	5.9%	30.4%	—	—
Other	5.3%	27.2%	—	—
LDS (Mormon)	2.6%	13.3%	—	—
Mainline Protestant	1.7%	8.9%	—	—
Non-religiousPopulation	80.5%	—	—	—

Click the chevron to expand denominations. Tradition and denomination rows label both share of total population and share of all religious adherents. Non-religious is shown as a share of total population only.

Who lives in the Eureka-Arcata, CA metro area? 134,541 residents across 1 counties.

Demographic Comparison

Demographics

Read this geography's profile in three layers: local, state (where available), and national baseline.

Eureka-Arcata, CA vs National135K residents

Population & electorate

Scale, voting-age share, and this geography's footprint inside the national electorate.

Total population

Local vs state vs U.S.

135K

local

135KNational 334.9M

Share of U.S. population

Local vs state vs U.S.

0.04%

local

0.04%National 100%

Voting-age population

Local vs state vs U.S.

78.1%

local

78.1%National 75.7%

Economic profile

Income, attainment, and ownership indicators that often shape coalition structure and turnout behavior.

Median household income

Local vs state vs U.S.

$61,160

local

$61,160National $83,960

Poverty rate

Local vs state vs U.S.

18.7%

local

18.7%National 12.5%

College degree

Local vs state vs U.S.

33.1%

local

33.1%National 35.6%

Homeownership

Local vs state vs U.S.

56.5%

local

56.5%National 65.2%

Community profile

Age structure, language use, and nativity signals that explain how this geography differs from state and nation.

Median age

Local vs state vs U.S.

39.9 yrs

local

39.9 yrsNational 39.1 yrs

Age 18–29

Local vs state vs U.S.

18.7%

local

18.7%National 15.7%

Age 65+

Local vs state vs U.S.

19.8%

local

19.8%National 17.0%

Foreign born

Local vs state vs U.S.

6.2%

local

6.2%National 14.1%

Non-English at home

Local vs state vs U.S.

11.1%

local

11.1%National 22.2%

English only

Local vs state vs U.S.

88.9%

local

88.9%National 77.8%

Voter Turnout

Turnout in Eureka-Arcata, CA

Estimated using 2020 Census voting-age population.

2024 Turnout

61.1%

vs Previous

-4.4pp

Voting-Age Pop

105,137

History

1988–2024

Competitiveness

How competitive is Eureka-Arcata, CA?

Safe DAvg margin: D+28.8 (last 3 elections)

2008

D+28.1

2012

D+27.1

2016

D+24.7

2020

D+33.4

2024

D+28.4

Elasticity

8.7pp

margin range

Party Flips

last 30 years

5-Elec Avg

D+28.3

Ticket-Splitting

Do voters in Eureka-Arcata, CA split their tickets?

Divergence between offices in the same election reveals persuadable voters.

ConsistencyHeavy splitting (0/100)

2024 Office Comparisons

Offices	Margin A	Margin B	Split
President vs Senate	D+28.4	D+27.7	0.7pp

Average divergence across office pairs: 22.7pp

Containing Geography

Located In

Eureka-Arcata, CA sits inside these higher-level geographies.

California(State)

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