Akashic
1892–2024
Akashic
Boulder, CO
presidential margin
2008D+46.12012D+41.82016D+48.32020D+56.62024D+55.7
full record · 1892 → 2024
D+55.7
2024
median income$103,994U.S. $80,734 · CO $95,470
median age37.7U.S. 39.1 · CO 37.9
poverty rate11.2%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
German18.1%
English15.1%
Irish12.6%
Mexican9.9%
Spanish0.8%
Spaniard0.7%
Chinese1.4%
Asian Indian1.1%
Korean0.4%
religion
other traditions
Mainline3.5%
Buddhist1.0%
Latter-day Saints0.7%
Jewish0.7%
American Community Survey 2024 5-year (income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents, unaffiliated is the unclaimed remainder.

Boulder, CO, Colorado

Akashic
Boulder, COHarrisD+55.7
—
2024 presidential margin by county for Boulder, CO, COA map of the single county of Boulder, CO, CO, outlined and filled by its 2024 presidential margin from deep red (Republican) through neutral to deep blue (Democratic), seated within the faint outlines of the surrounding states.Boulder County, CO · D+55.7
How it voted
Share of the 2024 vote
Kamala Harris ✓Democratic76.5%150,149
Donald TrumpRepublican20.8%40,758
Robert F. Kennedy Jr.Independent2.7%5,397
D+60
R+60
A single county, filled by its 2024 D-vs-R margin. Hover it for the full result.
County-level results (1 county) — table
2024 presidential result by county for Boulder, CO, CO — winner and D-vs-R margin.
CountyWinnerMargin
Boulder County, CODemocraticD+55.7
34 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024).
YearWonDemocraticRepublicanOtherMarginTotal
D
76.5%Harris150,149
20.8%Trump40,758
2.7%Kennedy5,397
+55.7%
196,304
D
77.2%Biden159,089
20.6%Trump42,501
2.2%Jorgensen4,521
+56.6%
206,111
D
70.3%Clinton132,334
22.0%Trump41,396
7.7%Johnson14,415
+48.3%
188,145
D
69.7%Obama125,091
27.8%Romney49,981
2.5%Johnson4,427
+41.8%
179,499
D
72.3%Obama124,159
26.1%McCain44,904
1.6%Nader2,700
+46.1%
171,763
D
66.3%Kerry105,564
32.4%Bush51,586
1.3%Nader2,109
+33.9%
159,259
D
50.1%Gore69,983
36.4%Bush50,873
13.4%Nader18,770
+13.7%
139,626
D
52.2%Clinton63,316
34.5%Dole41,922
13.3%Perot16,116
+17.6%
121,354
D
50.9%Clinton64,567
26.5%Bush33,553
22.6%Perot28,651
+24.5%
126,771
D
53.4%Dukakis57,265
44.9%Bush48,174
1.7%Paul1,784
+8.5%
107,223
R
43.4%Mondale42,195
55.1%Reagan53,535
1.5%Bergland1,493
−11.7%
97,223
R
32.6%Carter28,422
46.7%Reagan40,698
20.6%Anderson17,949
−14.1%
87,069
R
41.0%Carter33,284
52.7%Ford42,830
6.3%McCarthy5,139
−11.7%
81,253
R
41.1%McGovern29,484
56.8%Nixon40,766
2.1%Schmitz1,520
−15.7%
71,770
R
36.3%Humphrey17,422
57.7%Nixon27,671
6.0%Wallace2,895
−21.4%
47,988
D
56.4%Johnson22,737
43.1%Goldwater17,373
0.5%Hass220
+13.3%
40,330
R
38.1%Kennedy12,276
61.5%Nixon19,791
0.4%Byrd130
−23.3%
32,197
R
32.5%Stevenson8,149
66.9%Eisenhower16,748
0.6%Andrews142
−34.3%
25,039
R
33.7%Stevenson7,767
65.3%Eisenhower15,069
1.1%Hallinan243
−31.6%
23,079
R
44.3%Truman8,792
52.1%Dewey10,335
3.6%Thurmond712
−7.8%
19,839
R
42.3%Roosevelt7,442
57.1%Dewey10,054
0.6%Thomas114
−14.8%
17,610
R
45.7%Roosevelt9,039
53.2%Willkie10,525
1.1%Thomas212
−7.5%
19,776
D
55.9%Roosevelt9,788
41.4%Landon7,244
2.7%Lemke469
+14.5%
17,501
D
50.4%Roosevelt8,412
44.8%Hoover7,487
4.8%Thomas808
+5.5%
16,707
R
31.1%Smith4,363
67.5%Hoover9,457
1.4%Thomas195
−36.3%
14,015
R
25.3%Davis3,273
58.8%Coolidge7,595
15.9%La Follette2,059
−33.4%
12,927
R
37.7%Cox4,200
57.9%Harding6,456
4.4%Debs492
−20.2%
11,148
D
61.5%Wilson7,419
33.0%Hughes3,986
5.5%Benson666
+28.4%
12,071
D
40.8%Wilson4,330
23.0%Taft2,445
36.2%Roosevelt3,845
+17.7%
10,620
D
49.6%Bryan5,772
41.8%Taft4,856
8.6%Debs1,001
+7.9%
11,629
R
39.6%Parker4,030
53.9%Roosevelt5,483
6.5%Debs659
−14.3%
10,172
D
55.8%Bryan5,117
40.6%McKinley3,719
3.6%Woolley332
+15.2%
9,168
D
83.9%Bryan6,046
14.3%McKinley1,033
1.8%Palmer130
+69.5%
7,209
O
0.0%Cleveland0
36.4%Harrison1,338
63.6%Weaver2,336
Weaver +27.2
3,674
presidential history
Presidential margin, 1892–2024
Democratic minus Republican, by election
Presidential margin over timeDemocratic-minus-Republican presidential margin from 1892 to 2024. Most recent: +55.7% in 2024.flipped D · 1988+55.7%DR18922024
Presidential margin over time
YearMargin (D minus R)
1892−36.4%
1896+69.5%
1900+15.2%
1904−14.3%
1908+7.9%
1912+17.7%
1916+28.4%
1920−20.2%
1924−33.4%
1928−36.3%
1932+5.5%
1936+14.5%
1940−7.5%
1944−14.8%
1948−7.8%
1952−31.6%
1956−34.3%
1960−23.3%
1964+13.3%
1968−21.4%
1972−15.7%
1976−11.7%
1980−14.1%
1984−11.7%
1988+8.5%
1992+24.5%
1996+17.6%
2000+13.7%
2004+33.9%
2008+46.1%
2012+41.8%
2016+48.3%
2020+56.6%
2024+55.7%
DemocraticRepublican
voter registration
Registered voters
By party of registration, over time
Voter registration in Boulder, CORegistered voters by party of registration, 2016–2024. Latest total 266,648 in 2024.66.7K133.3K200K266.6K266.6K20162024
DemocraticRepublicanUnaffiliatedOther parties
Voter registration in Boulder, CO
YearTotal registeredDemocraticRepublicanUnaffiliatedOther
2016266,217113,73345,569101,6535,262
2018251,112107,35237,701101,2464,813
2020257,455109,95934,264109,0124,220
2022258,327105,07929,623119,5574,068
2024266,648102,79228,261130,4365,159
Source: Colorado Secretary of State

Boulder's electorate skews younger and more degree-holding than any other Colorado metro, a demographic profile that has made it among the most consistently lopsided jurisdictions on the Front Range for two decades.

Across the recorded series it reached a Democratic high of 69.5 points in 1896 and a Republican high of 36.4 points in 1892. Between 2020 and 2024 the metro moved 0.8 points toward the Republican candidate; the 2024 margin was 55.7 points.

A population of 328,961, a 75% non-Hispanic-white share, and a median household income of $103,994 describe the metro. The metro's voting pattern over the last decade is most similar to that of Charlottesville, VA and Ann Arbor, MI.

Political twins — metros

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

Charlottesville, VA
95.6twin score
12-yr trend2016–2020 trajectorymedian income≠ 2004 margin
Ann Arbor, MI
95.5twin score
2008–2024 trajectory≠ % Asian
Corvallis, OR
95.2twin score
2016–2024 trajectory12-yr trend≠ median income

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.
Boulder, CO, Colorado. Akashic. https://akashic.app/cbsa/14500/. Accessed May 20, 2026. License: CC BY 4.0.
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Places within Boulder, CO

counties1
Boulder County

Frequently asked questions

How did Boulder, CO, Colorado vote in 2024?
In 2024, Boulder, CO, Colorado voted Democratic by 55.7 points (D+55.7), carried by the Democratic candidate. Out of 196,304 votes cast, 150,149 went Democratic and 40,758 went Republican.
When did Boulder, CO, Colorado last vote Republican?
The most recent presidential election in which Boulder, CO, Colorado voted Republican was 1984.
How many people live in Boulder, CO, Colorado?
Boulder, CO, Colorado has a population of 328,961 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boulder, CO, Colorado?
Median household income in Boulder, CO, Colorado is $103,994 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Boulder, CO, Colorado?
Akashic tracks 34 presidential elections in Boulder, CO, Colorado from 1892 to 2024. Of those, 18 went Democratic and 15 went Republican.