Akashic
1892–2024
Akashic
Colorado 18th State Senate District
presidential margin
2008D+60.72012D+56.62016D+63.62020D+70.12024D+68.0
full record · 2008 → 2024
D+68.0
2024
median income$105,382U.S. $80,734 · CO $95,470
median age32.8U.S. 39.1 · CO 37.9
poverty rate15.6%U.S. 12.5% · CO 9.5%
bachelor’s+ (25+)64.2%U.S. 35.6% · CO 45.5%
non-english15.1%U.S. 22.3% · CO 16.2%
race · ethnicity · ancestry
German19.3%
English16.1%
Irish13.5%
Mexican6.5%
Spanish0.5%
Spaniard0.5%
Chinese1.9%
Asian Indian1.5%
Korean0.5%
religion

Religious adherence is published only at the county level (U.S. Religion Census). See Boulder County.

American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024.

Colorado 18th State Senate District

Akashic
Colorado 18th State Senate DistrictHarrisD+68.0
2024
2024 presidential margin for Colorado 18th State Senate DistrictThe boundary of Colorado 18th State Senate District, filled by its 2024 presidential margin (D+68.0), over faint outlines of the counties it is drawn from.Colorado 18th State Senate District · D+68.0
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic82.6%77,526
Donald TrumpRepublican14.6%13,713
Robert F. Kennedy Jr.Independent2.7%2,572
D+60
R+60
District boundary, filled by its own 2024 D-vs-R margin — precinct detail where available, over the 1 county it's drawn from (shown faint).
The precinct map shows the 2024 presidential vote; the timeline scrubs the district’s overall result across 1892–2024, on its current boundaries.
County-level results (1 county) — table
2024 presidential result by county for Colorado 18th State Senate District — winner and D-vs-R margin.
CountyWinnerMargin
Boulder County, CODemocraticD+55.7
5 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
82.6%Harris77,526
14.6%Trump13,713
2.7%Kennedy2,572
+68.0%
93,811
D
84.2%Biden85,740
14.1%Trump14,393
1.6%Jorgensen1,665
+70.1%
101,798
D
78.4%Clinton77,931
14.8%Trump14,734
6.8%Johnson6,736
+63.6%
99,401
D
78.3%Obama73,811
21.7%Romney20,437
0.0%
+56.6%
94,248
D
79.6%Obama74,875
18.9%McCain17,787
1.5%Nader1,390
+60.7%
94,052
presidential history
Presidential margin, 2008–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 2008 to 2024. Most recent: +68.0% in 2024.+68.0%DR20082024
Presidential margin over time
YearMargin (D minus R)
2008+60.7%
2012+56.6%
2016+63.6%
2020+70.1%
2024+68.0%
DemocraticRepublican
current representation
Current officeholders
DJudy AmabileState Senate · 18

State legislative officeholder from OpenStates nightly current-legislator data.

Source · OpenStates current legislator CSV.

Colorado Senate District 18 sits within the Denver metro, where high population density and a college-educated workforce have produced consistent double-digit Democratic presidential margins across recent cycles.

Across the recorded series it reached a Democratic high of 70.1 points in 2020. Between 2020 and 2024 the district moved 2.1 points toward the Republican candidate; the 2024 margin was 68.0 points.

A population of 164,205, a 80% non-Hispanic-white share, and a median household income of $105,382 describe the district. The district's voting pattern over the last decade is most similar to that of State Senate District 31 and State Senate District 21.

Political twins — state-senate districts

The state-senate districts whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.

State Senate District 31
Colorado
97.1twin score
2008–2024 trajectory
State Senate District 21
Oregon
95.1twin score
2008–2024 trajectory≠ college share
Legislative (Senate) District 36
Washington
94.7twin score
2008–2024 trajectory≠ elasticity

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.
Colorado 18th State Senate District. Akashic. https://akashic.app/sld-upper/08018/. Accessed May 20, 2026. License: CC BY 4.0.
License: CC BY 4.0
Colorado at the ballot boxAll elections →
Presidentcounty detail2024US Senatestatewide2022Governorstate + county2022US Houseall districts2024

Places within Colorado 18th State Senate District

counties it covers1
Boulder County

Frequently asked questions

How did Colorado 18th State Senate District vote in 2024?
In 2024, Colorado 18th State Senate District voted Democratic by 68.0 points (D+68.0), carried by the Democratic candidate. Out of 93,811 votes cast, 77,526 went Democratic and 13,713 went Republican.
How many people live in Colorado 18th State Senate District?
Colorado 18th State Senate District has a population of 164,205 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Colorado 18th State Senate District?
Median household income in Colorado 18th State Senate District is $105,382 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Colorado 18th State Senate District?
Akashic tracks 5 presidential elections in Colorado 18th State Senate District from 2008 to 2024. Of those, 5 went Democratic and 0 went Republican.