state senate districtCalifornia 27th State Senate District
presidential margin
2004–2024 · Democratic minus Republican
2004D+7.4
2008D+21.5
2012D+18.6
2016D+29.6
2020D+29.1
2024D+21.9
net swing · 2004→2024D+14.5D+7.4 → D+21.9
vs. U.S. · 2024D+23.4D+21.9 vs R+1.5
presidential returns
2024 turnout 67.7% of 724,760 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
292,024
184,624
14,076
490,724
724,760
67.7%
2020
342,394
185,766
10,482
538,642
721,382†
74.7%
2016
269,492
140,981
23,787
434,260
691,957†
62.8%
2012
240,213
163,136
10,581
413,930
648,721†
63.8%
2008
238,749
154,127
933
393,809
616,972†
63.8%
2004
203,594
175,299
3,758
382,651
585,223†
65.4%
† Citizen voting-age population estimated for prior cycles from the constituent-county ACS trend anchored to the current figure. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · 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
GroupCA SD 27CaliforniaUnited States
German7.1%6.8%12.5%
English6.5%6.3%9.5%
Irish6.4%5.9%9.4%
American4.2%2.8%5.3%
Italian3.9%3.4%4.8%
Armenian2.2%——
French1.6%1.3%1.6%
Polish1.6%0.9%2.2%
Mexican12.2%32.3%11.3%
Salvadoran1.3%2.0%0.7%
Guatemalan0.8%1.3%0.5%
Puerto Rican0.2%0.6%1.8%
Honduran0.2%—0.3%
Chinese2.4%3.9%1.3%
Filipino2.0%3.3%0.9%
Korean1.1%1.2%0.4%
Asian Indian0.7%2.3%1.4%
Vietnamese0.6%1.7%0.6%
Japanese0.5%0.6%0.2%
Taiwanese0.2%0.3%—
Aztec3.5%0.3%—
Maya1.7%——
Samoan0.9%——
African American†2.9%4.4%9.9%
African0.2%0.3%0.5%
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
CA SD 27
California
United States
Median age
41.1
37.9
39.1
Age 18–24
8.9%
9.1%
9.2%
Age 65 and older
15.7%
15.6%
17.2%
Household economy
Measure
CA SD 27
California
United States
Median household income
$112,200
$99,122
$84,427
Poverty rate
9.5%
12.0%
12.5%
Bachelor's degree or higher (25+)
36.0%
36.6%
35.6%
Languages at home
Measure
CA SD 27
California
United States
Speaks a non-English language at home
51.4%
44.4%
22.3%
Spanish
35.9%
28.4%
13.6%
Other Indo-European
3.6%
3.4%
2.0%
Chinese (incl. Mandarin & Cantonese)
3.4%
3.5%
1.1%
Tagalog (incl. Filipino)
2.1%
2.1%
0.6%
Religious landscape
Measure
CA SD 27
California
United States
Catholic
—
26.2%
18.6%
Evangelical Protestant
—
9.0%
16.5%
Unclaimed / not counted
—
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.
California 27th State Senate District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+7.4%
2008
+21.5%
2012
+18.6%
2016
+29.6%
2020
+29.1%
2024
+21.9%
DemocraticRepublican
6 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. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004, 2024 sub-county results are estimated: the source's block-level detail for these cycles was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
59.5%Harris292,024
37.6%Trump184,624
2.9%
D+21.9
R+7.2
D+23.4
490,724
D
63.6%Biden342,394
34.5%Trump185,766
1.9%
D+29.1
R+0.5
D+24.6
538,642
D
62.1%Clinton269,492
32.5%Trump140,981
5.5%
D+29.6
D+11.0
D+27.5
434,260
D
58.0%Obama240,213
39.4%Romney163,136
2.6%
D+18.6
R+2.9
D+14.8
413,930
D
60.6%Obama238,749
39.1%McCain154,127
0.2%
D+21.5
D+14.1
D+14.2
393,809
D
53.2%Kerry203,594
45.8%Bush175,299
1.0%
D+7.4
—
D+9.9
382,651
current representation
Current officeholders
DHenry SternState Senate · 27
State legislative officeholder from OpenStates nightly current-legislator data.
With nearly a million residents and a 2024 presidential margin of R+3, this Inland Empire-area district sits at the competitive edge of California's political map, where Latino population growth and suburban realignment have kept outcomes closely watched.
Across the recorded series it reached a Democratic high of 29.6 points in 2016. Between 2020 and 2024 the district moved 7.2 points toward the Republican candidate; the 2024 margin was 21.9 points.
A population of 991,307, a 36% non-Hispanic-white share, and a median household income of $112,200 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 24 and State Senate District 9.
Akashic
Political twins — state-senate districts
The state-senate districts 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.
California 27th State Senate District. Akashic. https://akashic.app/sld-upper/06027/. Accessed May 20, 2026. License: CC BY 4.0.
How did California 27th State Senate District vote in 2024?
In 2024, California 27th State Senate District voted Democratic by 21.9 points (D+21.9), carried by the Democratic candidate. Out of 490,724 votes cast, 292,024 went Democratic and 184,624 went Republican.
How many people live in California 27th State Senate District?
California 27th State Senate District has a population of 991,307 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 27th State Senate District?
Median household income in California 27th State Senate District is $112,200 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 27th State Senate District?
Akashic tracks 6 presidential elections in California 27th State Senate District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
