Costilla County, Colorado
Precinct data
Results by precinct
16 precincts · 2,080 votes
Precinct boundaries and identifiers are cycle-specific. This table does not join rows across years without a validated crosswalk.
| Precinct -30662120073066212007 | 356 | 326 | 16 | 698 | 51.0% | 46.7% | D+4.3 |
|---|---|---|---|---|---|---|---|
| Precinct -30662120083066212008 | 170 | 208 | 24 | 402 | 42.3% | 51.7% | R+9.5 |
| Precinct -30662120043066212004 | 150 | 72 | 9 | 231 | 64.9% | 31.2% | D+33.8 |
| Precinct -30662120023066212002 | 159 | 41 | 4 | 204 | 77.9% | 20.1% | D+57.8 |
| Precinct -30662120053066212005 | 76 | 94 | 8 | 178 | 42.7% | 52.8% | R+10.1 |
| Precinct -30662120013066212001 | 113 | 37 | 10 | 160 | 70.6% | 23.1% | D+47.5 |
| Precinct -30662120033066212003 | 75 | 39 | 3 | 117 | 64.1% | 33.3% | D+30.8 |
| Precinct -30662120063066212006 | 56 | 33 | 1 | 90 | 62.2% | 36.7% | D+25.6 |
| Costilla 108_0802312001 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 208_0802312002 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 308_0802312003 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 408_0802312004 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 508_0802312005 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 608_0802312006 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 708_0802312007 | 0 | 0 | 0 | 0 | — | — | Even |
| Costilla 808_0802312008 | 0 | 0 | 0 | 0 | — | — | Even |
Presidential margin, 1880–2024
Democratic minus Republican, by election
| Year | Margin (D minus R) |
|---|---|
| 1880 | +6.3% |
| 1884 | −1.4% |
| 1888 | −13.8% |
| 1892 | −63.4% |
| 1896 | +47.3% |
| 1900 | −31.9% |
| 1904 | −28.4% |
| 1908 | −30.2% |
| 1912 | −25.9% |
| 1916 | +26.9% |
| 1920 | −1.8% |
| 1924 | −5.8% |
| 1928 | +23.5% |
| 1932 | +34.7% |
| 1936 | +23.5% |
| 1940 | +20.3% |
| 1944 | +25.6% |
| 1948 | +25.4% |
| 1952 | +12.2% |
| 1956 | +13.2% |
| 1960 | +35.7% |
| 1964 | +62.0% |
| 1968 | +30.8% |
| 1972 | +9.9% |
| 1976 | +44.1% |
| 1980 | +34.6% |
| 1984 | +23.1% |
| 1988 | +42.1% |
| 1992 | +46.4% |
| 1996 | +50.9% |
| 2000 | +33.4% |
| 2004 | +34.3% |
| 2008 | +48.9% |
| 2012 | +48.7% |
| 2016 | +29.1% |
| 2020 | +27.2% |
| 2024 | +14.7% |
U.S. Senate
| Year | Won | Democratic | Republican | Total |
|---|---|---|---|---|
| 2022 | D | 65.7%1,108 | 30.7%518 | 1,686 |
| 2020 | D | 62.9%1,313 | 34.2%713 | 2,087 |
Registered voters
By party of registration, over time
Registration leans Democratic; the presidential vote runs 12 points more Democratic.
| Year | Total registered | Democratic | Republican | Unaffiliated | Other |
|---|---|---|---|---|---|
| 2016 | 2,924 | 1,761 | 468 | 635 | 60 |
| 2018 | 2,849 | 1,657 | 420 | 717 | 55 |
| 2020 | 3,041 | 1,641 | 479 | 867 | 54 |
| 2022 | 3,244 | 1,582 | 463 | 1,142 | 57 |
| 2024 | 3,495 | 1,483 | 545 | 1,379 | 88 |
Who moves in and out
Net migration over time, and who arrivals are — where they came from and what those places vote
+41 net domestic migration · 2025
Net +648 over 2011–2025 · gain loss
Arrivals reported $41,933 in average income, against $46,730 for residents who stayed — 10% lower. (IRS SOI, 2022–23)
The places arrivals came from lean R+10.8 on average — 25 points more Republican-leaning than Costilla County, CO itself (D+14.7).
Where arrivals came from lean of each source
- Alamosa County, CO22R+10.8
Where departures went households, 2022–23
- Alamosa County, CO21
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 | +93 |
| 2012 | −35 |
| 2013 | −55 |
| 2014 | +30 |
| 2015 | +12 |
| 2016 | +131 |
| 2017 | +56 |
| 2018 | +45 |
| 2019 | +63 |
| 2021 | +121 |
| 2022 | +26 |
| 2023 | +34 |
| 2024 | +86 |
| 2025 | +41 |
Despite sparse population and an agricultural economy centered on the upper Rio Grande, Costilla County has returned double-digit Democratic margins in recent cycles, driven largely by a majority-Hispanic electorate with deep multigenerational roots in the region.
Across the recorded series it reached a Democratic high of 62.0 points in 1964 and a Republican high of 63.4 points in 1892. Between 2020 and 2024 the county moved 12.6 points toward the Republican candidate; the 2024 margin was 14.7 points.
A population of 3,607, a 37% non-Hispanic-white share, and a median household income of $36,861 describe the county. The county's voting pattern over the last decade is most similar to that of San Miguel County and Mora 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 →
Costilla County, Colorado. Akashic. https://akashic.app/county/08023/. Accessed May 20, 2026. License: CC BY 4.0.