† Citizen voting-age population estimated for prior cycles; 2004 predates the ACS and is extrapolated. Source: ACS 5-year, table B05003.
——
D+60R+60
20042024
Boundary by 2024 margin · Precinct returns · VEST · MIT Election Lab
People and households
Who lives here
Exact values for this place, its state, and the United States.
Race · ethnicity · ancestry
Communities and origins
GroupBoulderColoradoUnited States
German19.5%17.9%12.5%
English16.3%12.6%9.5%
Irish13.6%11.2%9.4%
Italian5.7%4.9%4.8%
Polish3.3%2.1%2.2%
American3.2%3.5%5.3%
French3.1%2.0%1.6%
Scottish3.1%2.5%1.3%
Mexican7.2%15.8%11.3%
Spanish0.6%1.2%—
Spaniard0.5%1.0%—
Puerto Rican0.4%0.7%1.8%
Salvadoran0.2%0.3%0.7%
Chinese1.6%0.6%1.3%
Asian Indian1.3%0.6%1.4%
Korean0.5%0.3%0.4%
Japanese0.4%—0.2%
Nepalese0.4%——
Filipino0.2%0.3%0.9%
Vietnamese0.2%0.4%0.6%
Hispanic or Latino counts residents of any race; the race groups count only their non-Hispanic residents, so the groups are mutually exclusive and sum to 100%. Expand a row to see ancestries reported within that group.
Age and life stage
Measure
Boulder
Colorado
United States
Median age
28.8
37.9
39.1
Age 18–24
31.2%
9.2%
9.2%
Age 65 and older
12.6%
15.5%
17.2%
Household economy
Measure
Boulder
Colorado
United States
Median household income
$87,493
$95,470
$84,427
Poverty rate
21.5%
9.5%
12.5%
Bachelor's degree or higher (25+)
76.8%
45.5%
35.6%
Languages at home
Measure
Boulder
Colorado
United States
Speaks a non-English language at home
14.9%
16.2%
22.3%
Spanish
6.1%
11.1%
13.6%
French (incl. Cajun & Haitian)
1.0%
0.4%
0.7%
Other Indo-European
2.3%
1.0%
2.0%
Chinese (incl. Mandarin & Cantonese)
1.8%
0.5%
1.1%
Religious landscape
Measure
Boulder
Colorado
United States
Catholic
—
15.1%
18.6%
Evangelical Protestant
—
11.7%
16.5%
Unclaimed / not counted
—
64.7%
51.5%
American Community Survey 2024 5-year (CVAP, income, age, poverty, education, language, race, ancestry) · presidential returns from MIT Election Lab through 2024 · 2020 U.S. Religion Census (ASARB) — congregational adherents; unclaimed is the residual not counted by congregations.
Boulder, Colorado
presidential history
Presidential margin, 2004–2024
Democratic minus Republican, by election
Presidential margin over time
Year
Margin (D minus R)
2004
+62.5%
2008
+70.6%
2012
+64.7%
2016
+71.7%
2020
+77.2%
2024
+73.7%
DemocraticRepublican
6 presidential elections
Third column names the leading third-party or independent finisher. Source · MIT Election Lab · ICPSR · VEST (precinct-level 2024). Swing · margin change from the prior cycle. vs U.S. · margin relative to the national result that year. Third-party votes in 2012 are allocated from certified county totals by this place's share of each county's two-party vote — that cycle's precinct source records two-party splits. † 2004 sub-county results are estimated: the source's block-level detail for this cycle was unreliable — either county/municipality-level consolidated reporting (COVID-era) or a precinct-to-block allocation that misplaced votes — so the figures are allocated from the constituent county totals in proportion to the place and scaled to certified totals.
Year
Won
Democratic
Republican
Other
Margin
Swing
vs U.S.
Total
D
85.4%Harris48,703
11.7%Trump6,676
2.8%
D+73.7
R+3.5
D+75.2
56,996
D
87.8%Biden54,992
10.6%Trump6,611
1.7%
D+77.2
D+5.5
D+72.8
62,641
D
82.6%Clinton52,772
10.9%Trump6,940
6.5%
D+71.7
D+7.0
D+69.6
63,896
D
81.1%Obama51,087
16.4%Romney10,345
2.5%
D+64.7
R+5.9
D+60.8
62,985
D
84.5%Obama51,857
14.0%McCain8,563
1.5%
D+70.6
D+8.1
D+63.3
61,337
D
80.6%Kerry44,093
18.1%Bush9,899
1.3%
D+62.5
—
D+64.9
54,725
Boulder sits in the Rocky Mountain West. In 2024 it voted Democratic.
Across the recorded series it reached a Democratic high of 77.2 points in 2020. Between 2020 and 2024 the city moved 3.5 points toward the Republican candidate; the 2024 margin was 73.7 points.
A population of 106,433, a 78% non-Hispanic-white share, and a median household income of $87,493 describe the city. The city's voting pattern over the last decade is most similar to that of Ann Arbor and Charlottesville.
Akashic
Political twins — cities
The cities whose fingerprint — 2000–2024 trajectory, demographics, ancestry, religion — sits closest to this one, and why.
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.
In 2024, Boulder, Colorado voted Democratic by 73.7 points (D+73.7), carried by the Democratic candidate. Out of 56,996 votes cast, 48,703 went Democratic and 6,676 went Republican.
How many people live in Boulder, Colorado?
Boulder, Colorado has a population of 106,433 according to the 2024 American Community Survey 5-year estimates from the US Census Bureau.
What is the median household income in Boulder, Colorado?
Median household income in Boulder, Colorado is $87,493 — above the national median of $80,734. The Colorado state median is $95,470.
What is the political history of Boulder, Colorado?
Akashic tracks 6 presidential elections in Boulder, Colorado from 2004 to 2024. Of those, 6 went Democratic and 0 went Republican.
