akashic
1876–2024
Assembly District 21·California

California 21st State House District has voted Democratic in ten straight presidential cycles.

One of California's widest Republican presidential margins in 2024

1876 — 2024·38 elections
CA
Latest
D+50
in 2024
Archetype
Democratic loyalist
since the recent cycles
Population
157,715
2024 ACS

California 21st State House District, California: Democratic loyalist district. In 2024, voted D+50%. Democratic peak: D+58 in 2020.

Key facts

2024 presidential margin
D+50MIT Election Lab
Political archetype
Democratic loyalistAkashic typology
Population
157,7152024 5-year
Median household income
$158,8552024 5-year
White (non-Hispanic)
37.8%2024 5-year
Black
2.1%2024 5-year
Hispanic / Latino
24.9%2024 5-year
Peak Democratic margin
D+58 in 2020MIT Election Lab
Peak Republican margin
R+51 in 1920MIT Election Lab
2024 results by constituent county
1 counties · 1 D · 0 R
R+60
D+60
One cell per constituent county. Ordered by 2024 D-vs-R margin (bluest first). Hover for county-level numbers.
38 presidential elections
Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonMarginDemocraticRepublicanTotal
D
+50.3%
51,61816,27870,231
D
+57.7%
61,93016,05879,512
D
+57.2%
50,54012,30766,793
D
+46.7%
43,78415,45760,703
D
+48.7%
47,34115,94664,436
D
+40.2%
42,05017,70160,520
D
+33.3%
35,42917,05955,111
D
+31.3%
32,35815,61753,440
D
+26.8%
31,70515,95158,746
D
+12.8%
30,13923,21354,066
R
−5.0%
25,97728,72155,373
R
−12.2%
18,55524,74950,700
R
−6.2%
21,86124,92949,235
R
−10.0%
23,31628,76254,452
D
+3.5%
22,63120,96047,945
D
+28.8%
29,95216,55446,569
R
−3.7%
20,64122,21742,970
R
−22.2%
13,52021,25634,822
R
−26.6%
10,79318,64929,579
R
−17.0%
7,26910,39118,329
D
+1.5%
7,3507,13614,520
D
+5.8%
6,3385,63812,100
D
+32.6%
5,7552,9008,763
D
+16.7%
4,0572,8567,198
R
−18.9%
2,0733,0515,182
R
−50.0%
1641,7263,124
R
−51.4%
4161,5312,171
R
−6.9%
9531,1062,212
O
+46.5%
69001,484
R
−34.1%
279609968
R
−41.3%
181456666
R
−27.9%
194349555
R
−23.4%
210341559
R
−3.1%
217231457
R
−6.7%
208238450
R
−11.8%
159202365
R
−2.5%
153161317
R
−11.1%
148185333

Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
Irish
6.6%
German
6.0%
English
6.0%
Italian
5.0%
American
2.8%
French
1.7%
Scottish
1.3%
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: 40.9 in this county, 39.1 nationally
Male
Age
Female
0.9%
85+
1.5%
2.3%
75–84
3.0%
4.7%
65–74
5.3%
6.4%
55–64
6.6%
6.7%
45–54
6.7%
7.4%
35–44
7.2%
7.4%
25–34
6.8%
3.8%
18–24
3.5%
7.4%
5–17
7.0%
2.6%
<5
2.5%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$158,855
Assembly District 21 ranks near the middle of US counties.
Assembly District 21$158,855
California$99,122
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
6.7%
Child poverty is below the national average.
Children under 186.2%
Working age (18–64)6.4%
Seniors (65+)10.7%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
54.2%
speak English only
Asian & Pacific Islander19.9%
Spanish17.6%
Other Indo-European7.0%
Other languages1.2%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Catholic & Orthodox
22.1%
Other Christian
4.3%
Non-Christian
3.4%
Mainline Protestant
1.5%
Pentecostal & Holiness
1.2%
Baptist
0.7%
Methodist
0.6%
Source · 2020 US Religion Census. Remaining 66.2% of residents not counted as adherents by any reporting body.

Assembly District 21 recorded a 34.9-point Republican presidential margin in 2024, making it an outlier in a state that leans heavily Democratic statewide. Its constituency reflects the more conservative rural and exurban corridors of inland California.

The Democratic margin in California 21st State House District reached its widest at fifty-eight points in 2020. The margin in 2024 was fifty points — still decisive.

Its loyalty is rooted in its place. Median household income of $158,855, a 38% non-Hispanic-white share, and a population of 157,715 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.
Assembly District 21, California. Akashic. https://akashic.app/sld-lower/06021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did Assembly District 21, California vote in 2024?
In 2024, Assembly District 21, California voted Democratic by 50.3 points (D+50), carried by the Democratic candidate. Out of 70,231 votes cast, 51,618 went Democratic and 16,278 went Republican.
What is Assembly District 21, California's political archetype?
Akashic classifies Assembly District 21, 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 16 times, Republican 21 times, and other 1 times.
When did Assembly District 21, California last vote Republican?
The most recent presidential election in which Assembly District 21, California voted Republican was 1984.
How many people live in Assembly District 21, California?
Assembly District 21, California has a population of 157,715 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Assembly District 21, California?
Median household income in Assembly District 21, California is $158,855 — above the national median of $80,734. The California state median is $99,122.
What is the political history of Assembly District 21, California?
Akashic tracks 38 presidential elections in Assembly District 21, California from 1876 to 2024. Of those, 16 went Democratic and 21 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.