California 27th State Senate District, California: Democratic loyalist district. In 2024, voted D+28%. Republican peak: R+58 in 1924.
Key facts
- 2024 presidential margin
- D+28MIT Election Lab
- Political archetype
- Democratic loyalistAkashic typology
- Population
- 377,4562024 5-year
- Median household income
- $94,5252024 5-year
- White (non-Hispanic)
- 35.6%2024 5-year
- Black
- 6.4%2024 5-year
- Hispanic / Latino
- 47.5%2024 5-year
- Peak Democratic margin
- D+41 in 2016MIT Election Lab
- Peak Republican margin
- R+58 in 1924MIT Election Lab
Constituent county margins for State Senate District 27, CAOne cell per constituent county, colored by 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), ordered bluest first.
R+60D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
| Year | Won | Margin | Democratic | Republican | Total |
|---|---|---|---|---|---|
| D | 94,131 | 51,579 | 150,506 | ||
| D | 115,828 | 50,589 | 170,620 | ||
| D | 93,216 | 36,350 | 138,512 | ||
| D | 83,457 | 41,381 | 128,083 | ||
| D | 87,498 | 43,291 | 133,525 | ||
| D | 71,996 | 48,329 | 121,905 | ||
| D | 64,532 | 39,790 | 109,027 | ||
| D | 53,904 | 33,322 | 97,362 | ||
| D | 53,190 | 33,462 | 109,246 | ||
| R | 49,971 | 51,926 | 103,153 | ||
| R | 41,324 | 57,813 | 100,284 | ||
| R | 34,943 | 48,171 | 92,115 | ||
| R | 43,404 | 43,431 | 89,118 | ||
| R | 40,509 | 55,897 | 99,738 | ||
| R | 41,349 | 43,844 | 91,102 | ||
| D | 52,663 | 38,732 | 91,458 | ||
| D | 43,093 | 42,435 | 85,799 | ||
| R | 32,746 | 40,285 | 73,265 | ||
| R | 30,536 | 38,995 | 70,278 | ||
| D | 26,092 | 25,418 | 54,961 | ||
| D | 28,110 | 21,015 | 49,404 | ||
| D | 26,096 | 18,279 | 44,944 | ||
| D | 23,963 | 11,436 | 35,891 | ||
| D | 17,656 | 11,856 | 30,820 | ||
| R | 6,644 | 16,243 | 23,132 | ||
| R | 1,094 | 9,523 | 14,542 | ||
| R | 1,794 | 5,846 | 8,391 | ||
| R | 3,692 | 4,449 | 8,728 | ||
| O | 1,858 | 0 | 5,423 | ||
| R | 778 | 1,427 | 2,515 | ||
| R | 384 | 1,172 | 1,775 | ||
| R | 528 | 746 | 1,363 | ||
| R | 627 | 661 | 1,328 | ||
| R | 339 | 435 | 958 | ||
| R | 393 | 524 | 962 | ||
| R | 201 | 243 | 464 | ||
| R | 138 | 148 | 295 | ||
| D | 168 | 152 | 320 |
Demographics
Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
5.2%
English
4.8%
Irish
4.7%
American
3.1%
Italian
2.9%
French
1.2%
Polish
1.2%
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.
Age distribution by sex
Median age: 38.5 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.
Median household income
2024 inflation-adjusted dollars
$94,525
State Senate District 27 ranks near the middle of US counties.
State Senate District 27$94,525
California$99,122
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
12.7%
Children face moderate poverty.
Children under 1816.5%
Working age (18–64)11.5%
Seniors (65+)14.6%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
48.6%
speak English only
Spanish35.9%
Asian & Pacific Islander9.2%
Other Indo-European5.0%
Other languages1.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Source · 2020 US Religion Census. Remaining 49.1% of residents not counted as adherents by any reporting body.
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.
The Democratic margin in California 27th State Senate District reached its widest at forty-one points in 2016. The margin in 2024 was twenty-eight points — still decisive.
Its loyalty is rooted in its place. Median household income of $94,525, a 36% non-Hispanic-white share, and a population of 377,456 together describe a district whose political habits are deeply settled.
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.
State Senate District 27, California. Akashic. https://akashic.app/sld-upper/06027/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Frequently asked questions
How did State Senate District 27, California vote in 2024?
In 2024, State Senate District 27, California voted Democratic by 28.3 points (D+28), carried by the Democratic candidate. Out of 150,506 votes cast, 94,131 went Democratic and 51,579 went Republican.
What is State Senate District 27, California's political archetype?
Akashic classifies State Senate District 27, California as a "Democratic loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 17 times, Republican 20 times, and other 1 times.
When did State Senate District 27, California last vote Republican?
The most recent presidential election in which State Senate District 27, California voted Republican was 1988.
How many people live in State Senate District 27, California?
State Senate District 27, California has a population of 377,456 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State Senate District 27, California?
Median household income in State Senate District 27, California is $94,525 — above the national median of $80,734. The California state median is $99,122.
What is the political history of State Senate District 27, California?
Akashic tracks 38 presidential elections in State Senate District 27, California from 1876 to 2024. Of those, 17 went Democratic and 20 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.