Summit County, Colorado
Precinct data
Results by precinct
38 precincts · 17,545 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -20813590042081359004 | 986 | 321 | 36 | 1,343 | 73.4% | 23.9% | D+49.5 |
|---|---|---|---|---|---|---|---|
| Precinct -20813590052081359005 | 844 | 420 | 35 | 1,299 | 65.0% | 32.3% | D+32.6 |
| Precinct -20813590022081359002 | 836 | 386 | 34 | 1,256 | 66.6% | 30.7% | D+35.8 |
| Precinct -20813590202081359020 | 824 | 328 | 51 | 1,203 | 68.5% | 27.3% | D+41.2 |
| Precinct -20813590132081359013 | 697 | 375 | 31 | 1,103 | 63.2% | 34.0% | D+29.2 |
| Precinct -20813590012081359001 | 667 | 328 | 34 | 1,029 | 64.8% | 31.9% | D+32.9 |
| Precinct -20813590092081359009 | 645 | 352 | 24 | 1,021 | 63.2% | 34.5% | D+28.7 |
| Precinct -20813590172081359017 | 713 | 267 | 30 | 1,010 | 70.6% | 26.4% | D+44.2 |
| Precinct -20813590192081359019 | 674 | 253 | 32 | 959 | 70.3% | 26.4% | D+43.9 |
| Precinct -20813590072081359007 | 576 | 269 | 25 | 870 | 66.2% | 30.9% | D+35.3 |
| Precinct -20813590152081359015 | 563 | 212 | 15 | 790 | 71.3% | 26.8% | D+44.4 |
| Precinct -20813590182081359018 | 537 | 222 | 21 | 780 | 68.8% | 28.5% | D+40.4 |
| Precinct -20813590162081359016 | 528 | 200 | 32 | 760 | 69.5% | 26.3% | D+43.2 |
| Precinct -20813590102081359010 | 460 | 259 | 24 | 743 | 61.9% | 34.9% | D+27.1 |
| Precinct -20813590112081359011 | 424 | 225 | 23 | 672 | 63.1% | 33.5% | D+29.6 |
| Precinct -20813590062081359006 | 447 | 173 | 22 | 642 | 69.6% | 26.9% | D+42.7 |
| Precinct -20813590032081359003 | 419 | 201 | 15 | 635 | 66.0% | 31.7% | D+34.3 |
| Precinct -20813590142081359014 | 447 | 141 | 27 | 615 | 72.7% | 22.9% | D+49.8 |
| Precinct -20813590082081359008 | 298 | 140 | 20 | 458 | 65.1% | 30.6% | D+34.5 |
| Precinct -20813590122081359012 | 177 | 172 | 8 | 357 | 49.6% | 48.2% | D+1.4 |
| Summit 008_0811759000 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 108_0811759001 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1008_0811759010 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1108_0811759011 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1208_0811759012 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1308_0811759013 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1408_0811759014 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1508_0811759015 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1608_0811759016 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 1708_0811759017 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 208_0811759002 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 308_0811759003 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 408_0811759004 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 508_0811759005 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 608_0811759006 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 708_0811759007 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 808_0811759008 | 0 | 0 | 0 | 0 | — | — | Even |
| Summit 908_0811759009 | 0 | 0 | 0 | 0 | — | — | Even |
Presidential margin, 1880–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1880 | +1.5% |
| 1884 | −4.5% |
| 1888 | −11.4% |
| 1892 | −25.6% |
| 1896 | +95.4% |
| 1900 | +41.6% |
| 1904 | +0.7% |
| 1908 | +33.0% |
| 1912 | +43.6% |
| 1916 | +44.0% |
| 1920 | −3.6% |
| 1924 | −15.2% |
| 1928 | −8.2% |
| 1932 | +26.9% |
| 1936 | +29.6% |
| 1940 | +6.0% |
| 1944 | −15.7% |
| 1948 | +12.7% |
| 1952 | −23.9% |
| 1956 | −29.2% |
| 1960 | −2.9% |
| 1964 | +16.8% |
| 1968 | −25.2% |
| 1972 | −20.5% |
| 1976 | −23.5% |
| 1980 | −17.0% |
| 1984 | −33.9% |
| 1988 | −5.3% |
| 1992 | +13.0% |
| 1996 | +8.4% |
| 2000 | +7.3% |
| 2004 | +20.2% |
| 2008 | +33.0% |
| 2012 | +24.7% |
| 2016 | +27.6% |
| 2020 | +39.5% |
| 2024 | +37.2% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 68.2%9,710 | 29.6%4,211 | 14,244 |
| 2020 | D | 66.1%12,175 | 31.6%5,817 | 18,407 |
Registered voters
By party of registration, over time
Registration leans Democratic; the presidential vote runs 25 points more Republican.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2016 | 26,984 | 8,099 | 6,078 | 12,197 | 610 |
| 2018 | 27,670 | 8,190 | 5,740 | 13,133 | 607 |
| 2020 | 25,849 | 7,737 | 4,859 | 12,697 | 556 |
| 2022 | 25,948 | 7,442 | 4,264 | 13,693 | 549 |
| 2024 | 25,918 | 7,020 | 3,905 | 14,354 | 639 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
−448 net domestic migration · 2025
Net −2,080 over 2011–2025 · gain loss
Arrivals reported $134,350 in average income, against $138,951 for residents who stayed — 3% lower. (IRS SOI, 2022–23)
The places arrivals came from lean D+27.9 on average — 9.2 points more Republican-leaning than Summit County, CO itself (D+37.2).
Where arrivals came from lean of each source
- Denver County, CO183D+56.1
- Jefferson County, CO93D+19.5
- Boulder County, CO50D+55.7
- Eagle County, CO42D+24.4
- Arapahoe County, CO41D+20.1
- Douglas County, CO35R+7.0
Where departures went households, 2022–23
- Denver County, CO161
- Jefferson County, CO122
- Arapahoe County, CO66
- Grand County, CO58
- Park County, CO51
- Boulder County, CO41
Migration is one input to a place’s political change, not its cause — a shift can also come from residents changing their minds, generational turnover, or turnout. These figures describe the places people moved between; they do not measure how any mover voted.
| Year | Net domestic migration |
|---|---|
| 2011 | −465 |
| 2012 | −125 |
| 2013 | +173 |
| 2014 | +274 |
| 2015 | +395 |
| 2016 | +169 |
| 2017 | −40 |
| 2018 | −338 |
| 2019 | −105 |
| 2021 | −198 |
| 2022 | −625 |
| 2023 | −426 |
| 2024 | −321 |
| 2025 | −448 |
Summit County's economy revolves around ski resorts and outdoor tourism, drawing a highly educated, transient workforce that has pushed its presidential margins well above the state's already-blue average — 37 points Democratic in 2024.
Across the recorded series it reached a Democratic high of 95.4 points in 1896 and a Republican high of 33.9 points in 1984. Between 2020 and 2024 the county moved 2.4 points toward the Republican candidate; the 2024 margin was 37.2 points.
A population of 31,017, a 75% non-Hispanic-white share, and a median household income of $109,773 describe the county. The county's voting pattern over the last decade is most similar to that of Routt County and Eagle County.
The counties 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.
Browse places by community — income, education, race & ethnicity, language — all community cuts →
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 →
Summit County, Colorado. Akashic. https://akashic.app/county/08117/. Accessed May 20, 2026. License: CC BY 4.0.