akashic
1876–2024
State Senate District 12·Colorado

Colorado 12th State Senate District has voted Republican in fifteen straight presidential cycles.

One of Colorado's most Democratic legislative districts by presidential margin

1876 — 2024·38 elections
CO
Latest
R+10
in 2024
Archetype
Republican loyalist
since the recent cycles
Population
138,321
2024 ACS

Colorado 12th State Senate District, Colorado: Republican loyalist district. In 2024, voted R+10%. Republican peak: R+52 in 1928.

Key facts

2024 presidential margin
R+10MIT Election Lab
Political archetype
Republican loyalistAkashic typology
Population
138,3212024 5-year
Median household income
$90,3622024 5-year
White (non-Hispanic)
70.3%2024 5-year
Black
5.8%2024 5-year
Hispanic / Latino
18.7%2024 5-year
Peak Democratic margin
D+47 in 1896MIT Election Lab
Peak Republican margin
R+52 in 1928MIT Election Lab
2024 results by constituent county
2 counties · 0 D · 2 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
R
−9.8%
31,01437,96870,929
R
−10.8%
30,09137,71370,417
R
−22.3%
20,10833,36959,384
R
−20.4%
20,81731,82854,023
R
−18.8%
20,27429,84850,859
R
−34.6%
14,45630,04245,015
R
−33.1%
11,50523,88637,376
R
−26.9%
10,39219,06532,290
R
−24.1%
8,53216,01931,122
R
−41.1%
7,44618,05225,778
R
−51.1%
5,24716,45321,926
R
−37.2%
5,11312,32419,360
R
−20.9%
6,1279,48116,034
R
−41.9%
3,95310,03314,518
R
−18.2%
3,9525,96911,105
D
+7.8%
5,1834,4359,644
R
−30.0%
3,1685,8879,067
R
−18.0%
3,5155,0798,688
R
−38.3%
2,0864,7056,847
R
−12.0%
2,2882,9245,291
R
−16.7%
2,1753,0525,248
R
−11.4%
2,4813,1225,645
D
+17.0%
2,9152,0425,128
R
−2.7%
2,1142,2374,534
R
−51.8%
9443,0244,018
R
−33.1%
7711,9023,416
R
−29.4%
9451,7762,829
D
+7.5%
1,5631,3343,064
O
+18.3%
1,0375252,805
R
−13.4%
1,1191,4952,810
R
−27.9%
9861,7892,883
R
−10.4%
1,1671,4472,696
D
+47.1%
3,2891,1634,516
O
−47.4%
04951,044
R
−24.8%
238403665
R
−36.7%
99225343
R
−32.3%
108214328
—
No data
———

Demographics

Race, ethnicity, and ancestry
Click any group to see the ancestries typically reported within it.
German
17.8%
English
12.7%
Irish
11.2%
Italian
4.4%
American
4.4%
Scottish
2.8%
Polish
2.4%
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: 35.1 in this county, 39.1 nationally
Male
Age
Female
0.6%
85+
0.8%
1.7%
75–84
2.3%
4.0%
65–74
4.6%
5.4%
55–64
5.8%
5.6%
45–54
5.5%
7.1%
35–44
6.7%
8.6%
25–34
7.7%
5.9%
18–24
4.6%
8.7%
5–17
8.3%
3.2%
<5
3.0%
Source · American Community Survey 5-year estimates, 2024 release.
Median household income
2024 inflation-adjusted dollars
$90,362
State Senate District 12 ranks near the middle of US counties.
State Senate District 12$90,362
Colorado$95,470
United States$80,734
Source · American Community Survey 5-year estimates, 2024 release.
Poverty rate
All persons below federal poverty line
8.5%
Child poverty is below the national average.
Children under 1810.1%
Working age (18–64)7.9%
Seniors (65+)9.3%
Source · American Community Survey 5-year estimates, 2024 release.
Language at home
Population aged 5 and older
88.7%
speak English only
Spanish7.1%
Other Indo-European2.2%
Asian & Pacific Islander1.7%
Other languages0.4%
Source · ACS 5-year estimates, 2024.
Religious adherents
Adherents per capita by tradition
Other Christian
18.0%
Catholic & Orthodox
16.6%
Baptist
2.6%
Mainline Protestant
2.5%
Pentecostal & Holiness
1.6%
Methodist
1.3%
Non-Christian
0.6%
Source · 2020 US Religion Census. Remaining 56.8% of residents not counted as adherents by any reporting body.

District 12 returned a 58-point Democratic presidential margin in 2024, placing it among the most lopsided state senate districts in Colorado. Its urban core and dense residential neighborhoods anchor that consistency across election cycles.

The Republican margin in Colorado 12th State Senate District reached its widest at fifty-two points in 1928. The margin in 2024 was ten points, in line with the district's deep historical pattern.

Its loyalty is rooted in its place. Median household income of $90,362, a 70% non-Hispanic-white share, and a population of 138,321 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 12, Colorado. Akashic. https://akashic.app/sld-upper/08012/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0

Frequently asked questions

How did State Senate District 12, Colorado vote in 2024?
In 2024, State Senate District 12, Colorado voted Republican by 9.8 points (R+10), carried by the Republican candidate. Out of 70,929 votes cast, 31,014 went Democratic and 37,968 went Republican.
What is State Senate District 12, Colorado's political archetype?
Akashic classifies State Senate District 12, Colorado as a "Republican loyalist" district based on its long-arc presidential voting pattern. Across 38 elections in the dataset, the district has voted Democratic 4 times, Republican 31 times, and other 2 times.
When did State Senate District 12, Colorado last vote Democratic?
The most recent presidential election in which State Senate District 12, Colorado voted Democratic was 1964.
How many people live in State Senate District 12, Colorado?
State Senate District 12, Colorado has a population of 138,321 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 12, Colorado?
Median household income in State Senate District 12, Colorado is $90,362 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of State Senate District 12, Colorado?
Akashic tracks 38 presidential elections in State Senate District 12, Colorado from 1876 to 2024. Of those, 4 went Democratic and 31 went Republican. The district's archetype — "Republican loyalist" — captures the overall trajectory of that voting record.