congressional districtCalifornia 27th Congressional District
presidential margin
2004–2024 · Democratic minus Republican
2004R+3.5
2008D+10.6
2012D+10.0
2016D+18.5
2020D+19.4
2024D+9.8
net swing · 2004→2024D+13.3R+3.5 → D+9.8
vs. U.S. · 2024D+11.2D+9.8 vs R+1.5
presidential returns
2024 turnout 60.2% of 489,708 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
157,367
128,583
8,944
294,894
489,708
60.2%
2020
193,344
129,254
7,217
329,815
487,647†
67.6%
2016
144,687
97,056
15,442
257,185
468,949†
54.8%
2012
125,999
102,621
5,809
234,429
437,572†
53.6%
2008
124,537
100,692
759
225,988
416,700†
54.2%
2004
109,579
117,625
3,063
230,267
395,828†
58.2%
† 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
District 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-27CaliforniaUnited States
Mexican33.2%32.3%11.3%
Salvadoran4.3%2.0%0.7%
Guatemalan2.8%1.3%0.5%
Honduran0.6%—0.3%
Puerto Rican0.5%0.6%1.8%
Cuban0.4%—0.7%
Nicaraguan0.4%0.3%—
Colombian0.4%0.3%0.4%
German6.7%6.8%12.5%
Irish5.9%5.9%9.4%
English5.9%6.3%9.5%
American4.8%2.8%5.3%
Italian3.9%3.4%4.8%
Armenian3.1%——
Polish1.7%0.9%2.2%
French1.6%1.3%1.6%
African American†9.0%4.4%9.9%
African0.6%0.3%0.5%
Nigerian0.3%—0.2%
Jamaican0.3%—0.4%
Chinese2.7%3.9%1.3%
Filipino2.1%3.3%0.9%
Korean1.2%1.2%0.4%
Asian Indian0.6%2.3%1.4%
Vietnamese0.6%1.7%0.6%
Japanese0.5%0.6%0.2%
Taiwanese0.2%0.3%—
Cambodian0.2%——
Aztec13.2%0.3%—
Maya7.9%——
Samoan2.6%——
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-27
California
United States
Median age
37.4
37.9
39.1
Age 18–24
8.9%
9.1%
9.2%
Age 65 and older
15.2%
15.6%
17.2%
Household economy
Measure
CA-27
California
United States
Median household income
$101,314
$99,122
$84,427
Poverty rate
11.6%
12.0%
12.5%
Bachelor's degree or higher (25+)
36.0%
36.6%
35.6%
Languages at home
Measure
CA-27
California
United States
Speaks a non-English language at home
55.1%
44.4%
22.3%
Spanish
37.6%
28.4%
13.6%
Other Indo-European
4.1%
3.4%
2.0%
Chinese (incl. Mandarin & Cantonese)
4.1%
3.5%
1.1%
Tagalog (incl. Filipino)
2.3%
2.1%
0.6%
Religious landscape
Measure
CA-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 Congressional District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
−3.5%
2008
+10.6%
2012
+10.0%
2016
+18.5%
2020
+19.4%
2024
+9.8%
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, 2012, 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.
Federal officeholders only. State and local officeholders are planned for the next data pass.
Congressional elections · 25 House races · 17 Senate races
U.S. House
Each result reflects the U.S. House district as it was drawn for that election; redistricting has redrawn these lines over time, so they can differ from the current 120th-Congress district shown on the map above.
Source · MIT Election Lab (MEDSL), House. CC-BY 4.0.
Year
District
Won
Democratic
Republican
Total
2024
27
D
51.3%154,040
48.7%146,050
300,090
2022
27
R
46.8%91,892
53.2%104,624
196,516
2020
27
D
69.8%221,411
30.2%95,907
317,318
2018
27
D
100.0%202,636
0.0%0
202,636
2016
27
D
67.4%168,977
32.6%81,655
250,632
2014
27
D
59.4%75,728
40.6%51,852
127,580
2012
27
D
64.0%154,191
36.0%86,817
241,008
2010
27
D
65.2%102,927
34.8%55,056
157,983
2008
27
D
68.5%145,812
24.8%52,852
212,835
2006
27
D
68.8%92,650
31.2%42,074
134,724
2004
27
D
62.3%125,296
33.3%66,946
201,198
2002
27
D
62.0%79,815
38.0%48,996
128,811
2000
27
D
52.7%113,708
43.8%94,518
215,774
1998
27
R
46.4%73,875
50.7%80,702
159,066
1996
27
R
43.2%82,014
50.2%95,310
189,930
1994
27
R
42.1%70,267
53.0%88,341
166,774
1992
27
R
39.4%83,805
49.7%105,521
212,450
1990
27
D
58.2%90,857
37.2%58,140
156,098
1988
27
D
67.5%148,814
29.6%65,307
220,335
1986
27
D
63.7%110,403
34.3%59,410
173,320
1984
27
D
55.0%116,933
41.8%88,896
212,781
1982
27
D
59.5%108,347
37.0%67,479
182,217
1980
27
R
46.5%100,061
51.0%109,807
215,316
1978
27
R
49.0%85,880
51.0%89,392
175,272
1976
27
R
45.3%94,988
54.7%114,623
209,611
U.S. Senate
The statewide Senate race, counted in this district — aggregated from the precinct-level returns that fall inside its boundaries (not a statewide figure).
Votes · MIT Election Lab (MEDSL) precinct returns (CC BY 4.0); aggregated to the district over VEST precinct geometry (CC BY-NC 4.0).
Year
Won
Democratic
Republican
Total
2024
D
54.1%152,540
45.9%129,597
282,137
2022
D
61.1%6,621,621
38.9%4,222,029
10,843,650
2018
D
100.0%11,113,364
0.0%0
11,113,364
2016
D
100.0%12,244,170
0.0%0
12,244,170
2012
D
62.5%7,864,624
37.5%4,713,887
12,578,511
2010
D
52.2%5,218,441
42.2%4,217,366
10,000,093
2006
D
59.4%5,076,289
35.0%2,990,822
8,541,150
2004
D
57.7%6,955,728
37.8%4,555,922
12,053,242
2000
D
55.8%5,932,522
36.6%3,886,853
10,623,608
1998
D
53.1%4,410,056
43.0%3,575,078
8,311,905
1994
D
46.7%3,979,152
44.8%3,817,025
8,513,916
1992
D
47.9%5,173,467
43.0%4,644,182
10,799,436
1988
R
44.0%4,287,253
52.8%5,143,409
9,743,547
1986
D
49.3%3,646,672
47.9%3,541,804
7,398,462
1982
R
44.8%3,494,968
51.5%4,022,565
7,805,450
1980
D
56.5%4,704,098
37.1%3,091,671
8,324,012
1976
R
46.9%3,502,862
50.2%3,748,973
7,470,586
2024 U.S. Senate — every candidate counted in this district
Adam B Schiff · Democrat54.1%152,540
Steve Garvey · Republican45.9%129,597
Anchored in the San Gabriel Valley east of Los Angeles, CA-27 returned a D+29 presidential margin in 2024, reflecting a heavily Asian American and Latino electorate that has shifted decisively toward Democratic candidates over the past decade.
Across the recorded series it reached a Democratic high of 19.4 points in 2020 and a Republican high of 3.5 points in 2004. Between 2020 and 2024 the district moved 9.7 points toward the Republican candidate; the 2024 margin was 9.8 points.
A population of 759,650, a 31% non-Hispanic-white share, and a median household income of $101,314 describe the district. The district's voting pattern over the last decade is most similar to that of Congressional District 42 and Congressional District 31.
Akashic
Political twins — districts
The congressional 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 →
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All citations released under CC BY 4.0. Attribution: Akashic Intelligence.
California 27th Congressional District. Akashic. https://akashic.app/cd/0627/. Accessed May 20, 2026. License: CC BY 4.0.
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How did California 27th Congressional District vote in 2024?
In 2024, California 27th Congressional District voted Democratic by 9.8 points (D+9.8), carried by the Democratic candidate. Out of 294,894 votes cast, 157,367 went Democratic and 128,583 went Republican.
When did California 27th Congressional District last vote Republican?
The most recent presidential election in which California 27th Congressional District voted Republican was 2004.
How many people live in California 27th Congressional District?
California 27th Congressional District has a population of 759,650 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 27th Congressional District?
Median household income in California 27th Congressional District is $101,314 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 27th Congressional District?
Akashic tracks 6 presidential elections in California 27th Congressional District from 2004 to 2024. Of those, 5 went Democratic and 1 went Republican.
