state house districtCalifornia 30th State House District
presidential margin
2004–2024 · Democratic minus Republican
2004D+11.0
2008D+24.1
2012D+20.0
2016D+25.7
2020D+30.2
2024D+27.1
net swing · 2004→2024D+16.1D+11.0 → D+27.1
vs. U.S. · 2024D+28.6D+27.1 vs R+1.5
presidential returns
2024 turnout 68.0% of 366,443 citizens 18+
Year
Democrat
Republican
Others
Total
CVAP
Turnout
2024
154,453
86,848
7,989
249,290
366,443
68.0%
2020
171,053
90,218
6,489
267,760
364,552†
73.4%
2016
132,391
74,957
15,769
223,117
353,019†
63.2%
2012
125,224
82,157
7,743
215,124
340,086†
63.3%
2008
135,547
82,698
1,062
219,307
330,805†
66.3%
2004
119,929
95,836
3,476
219,241
321,524†
68.2%
† 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
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 HD 30CaliforniaUnited States
German15.0%6.8%12.5%
English14.7%6.3%9.5%
Irish13.0%5.9%9.4%
Italian7.2%3.4%4.8%
Scottish2.9%0.9%1.3%
American2.7%2.8%5.3%
French2.7%1.3%1.6%
Portuguese2.2%——
Mexican21.2%32.3%11.3%
Salvadoran0.5%2.0%0.7%
Spanish0.4%0.3%—
Puerto Rican0.3%0.6%1.8%
Spaniard0.3%0.3%—
Filipino2.0%3.3%0.9%
Chinese1.1%3.9%1.3%
Japanese0.6%0.6%0.2%
Asian Indian0.5%2.3%1.4%
Korean0.5%1.2%0.4%
Vietnamese0.2%1.7%0.6%
African American†1.5%4.4%9.9%
Aztec3.6%0.3%—
Samoan1.2%——
Maya1.2%——
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 HD 30
California
United States
Median age
41.4
37.9
39.1
Age 18–24
12.5%
9.1%
9.2%
Age 65 and older
18.5%
15.6%
17.2%
Household economy
Measure
CA HD 30
California
United States
Median household income
$102,234
$99,122
$84,427
Poverty rate
11.9%
12.0%
12.5%
Bachelor's degree or higher (25+)
34.6%
36.6%
35.6%
Languages at home
Measure
CA HD 30
California
United States
Speaks a non-English language at home
36.5%
44.4%
22.3%
Spanish
30.9%
28.4%
13.6%
Other Indo-European
1.0%
3.4%
2.0%
Religious landscape
Measure
CA HD 30
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 30th State House District
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+11.0%
2008
+24.1%
2012
+20.0%
2016
+25.7%
2020
+30.2%
2024
+27.1%
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 sub-county results are estimated: the source's block-level detail for this cycle 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
62.0%Harris154,453
34.8%Trump86,848
3.2%
D+27.1
R+3.1
D+28.6
249,290
D
63.9%Biden171,053
33.7%Trump90,218
2.4%
D+30.2
D+4.4
D+25.7
267,760
D
59.3%Clinton132,391
33.6%Trump74,957
7.1%
D+25.7
D+5.7
D+23.7
223,117
D
58.2%Obama125,224
38.2%Romney82,157
3.6%
D+20.0
R+4.1
D+16.2
215,124
D
61.8%Obama135,547
37.7%McCain82,698
0.5%
D+24.1
D+13.1
D+16.8
219,307
D
54.7%Kerry119,929
43.7%Bush95,836
1.6%
D+11.0
—
D+13.4
219,241
current representation
Current officeholders
DDawn AddisState House · 30
State legislative officeholder from OpenStates nightly current-legislator data.
Anchored in the western San Gabriel Valley, AD-30 has delivered double-digit Democratic presidential margins for more than a decade, reflecting a diverse, densely populated suburban electorate that trends heavily toward the party in statewide contests.
Across the recorded series it reached a Democratic high of 30.2 points in 2020. Between 2020 and 2024 the district moved 3.1 points toward the Republican candidate; the 2024 margin was 27.1 points.
A population of 476,712, a 62% non-Hispanic-white share, and a median household income of $102,234 describe the district. The district's voting pattern over the last decade is most similar to that of Assembly District 4 and Assembly District 12.
Akashic
Political twins — state-house districts
The state-house 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 30th State House District. Akashic. https://akashic.app/sld-lower/06030/. Accessed May 20, 2026. License: CC BY 4.0.
How did California 30th State House District vote in 2024?
In 2024, California 30th State House District voted Democratic by 27.1 points (D+27.1), carried by the Democratic candidate. Out of 249,290 votes cast, 154,453 went Democratic and 86,848 went Republican.
How many people live in California 30th State House District?
California 30th State House District has a population of 476,712 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in California 30th State House District?
Median household income in California 30th State House District is $102,234 — above the national median of $80,734. The California state median is $99,122.
What is the political history of California 30th State House District?
Akashic tracks 6 presidential elections in California 30th State House District from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
