akashic
1876–2024
State House District 21·Arizona

Arizona 21st State House District has voted Democratic in nine straight presidential cycles.

One of Arizona's most reliably Republican legislative seats

1876 — 2024·38 elections
AZ
Latest
D+14
in 2024
Archetype
Democratic loyalist
since the recent cycles
Population
158,084
2024 ACS

Arizona 21st State House District, Arizona: Democratic loyalist district. In 2024, voted D+14%. Democratic peak: D+38 in 1936.

Key facts

2024 presidential margin
D+14MIT Election Lab
Political archetype
Democratic loyalistAkashic typology
Population
158,0842024 5-year
Median household income
$67,0142024 5-year
White (non-Hispanic)
53.4%2024 5-year
Black
2.9%2024 5-year
Hispanic / Latino
45.2%2024 5-year
Peak Democratic margin
D+38 in 1936MIT Election Lab
Peak Republican margin
R+23 in 1956MIT Election Lab
2024 results by constituent county
3 counties · 2 D · 1 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
+14.3%
41,63931,10673,822
D
+20.0%
44,31329,35674,971
D
+18.0%
33,89722,94960,972
D
+10.6%
29,88324,06854,943
D
+8.8%
29,97525,09955,724
D
+6.8%
27,29523,78251,545
D
+9.0%
20,84017,22840,108
D
+15.5%
19,75014,02436,943
D
+10.2%
17,54013,59138,890
R
−2.1%
15,65316,33732,390
R
−16.2%
12,49917,37930,188
R
−15.3%
9,02412,96825,844
R
−3.5%
10,01810,77121,677
R
−10.8%
7,89810,27221,888
R
−8.8%
5,8437,09414,199
D
+8.0%
7,8506,68114,556
R
−1.2%
6,3496,50412,882
R
−23.1%
3,6535,8569,517
R
−17.5%
3,5495,0578,606
D
+6.8%
3,2052,7866,139
D
+17.0%
2,6171,8544,481
D
+23.5%
2,9721,8404,824
D
+38.2%
2,8591,2574,195
D
+35.4%
2,6301,2273,960
R
−7.8%
1,3671,6002,976
R
−2.7%
8789402,319
R
−11.4%
9261,1652,091
D
+5.6%
9728631,930
D
+32.6%
32694712
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Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
11.3%
English
9.2%
Irish
7.9%
Italian
3.6%
American
2.9%
Polish
1.9%
Scottish
1.7%
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: 39.5 in this county, 39.1 nationally
Male
Age
Female
0.9%
85+
1.3%
3.3%
75–84
3.7%
5.6%
65–74
6.4%
5.7%
55–64
6.2%
5.3%
45–54
5.5%
5.8%
35–44
5.8%
6.6%
25–34
6.2%
5.5%
18–24
5.4%
8.0%
5–17
7.7%
2.6%
<5
2.5%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$67,014
State House District 21 ranks near the middle of US counties.
State House District 21$67,014
Arizona$79,964
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
15.5%
Children face moderate poverty.
Children under 1820.3%
Working age (18–64)14.6%
Seniors (65+)10.9%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
64.2%
speak English only
Spanish31.8%
Other Indo-European1.6%
Asian & Pacific Islander1.5%
Other languages0.9%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Catholic & Orthodox
30.6%
Other Christian
10.0%
Pentecostal & Holiness
2.0%
Mainline Protestant
2.0%
Non-Christian
1.8%
Baptist
1.6%
Methodist
0.6%
Source · 2020 US Religion Census. Remaining 51.4% of residents not counted as adherents by any reporting body.

Anchored in the rural and exurban corridors south and east of the Phoenix metro, this district has backed Republican presidential candidates by double-digit margins in every recent cycle, with 2024's R+22 representing its widest recorded gap.

The Democratic margin in Arizona 21st State House District reached its widest at thirty-eight points in 1936. The margin in 2024 was fourteen points — still decisive.

Its loyalty is rooted in its place. Median household income of $67,014, a 53% non-Hispanic-white share, and a population of 158,084 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 House District 21, Arizona. Akashic. https://akashic.app/sld-lower/04021/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did State House District 21, Arizona vote in 2024?
In 2024, State House District 21, Arizona voted Democratic by 14.3 points (D+14), carried by the Democratic candidate. Out of 73,822 votes cast, 41,639 went Democratic and 31,106 went Republican.
What is State House District 21, Arizona's political archetype?
Akashic classifies State House District 21, Arizona 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 12 times, and other 0 times.
When did State House District 21, Arizona last vote Republican?
The most recent presidential election in which State House District 21, Arizona voted Republican was 1988.
How many people live in State House District 21, Arizona?
State House District 21, Arizona has a population of 158,084 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in State House District 21, Arizona?
Median household income in State House District 21, Arizona is $67,014 — below the national median of $80,734. The Arizona state median is $79,964.
What is the political history of State House District 21, Arizona?
Akashic tracks 38 presidential elections in State House District 21, Arizona from 1876 to 2024. Of those, 17 went Democratic and 12 went Republican. The district's archetype — "Democratic loyalist" — captures the overall trajectory of that voting record.