3,012
Active registered voters
8
Precincts
1,519
Supervoters (50.43%)
5
Presidential cycles of results
Data as of September 22, 2026 · refreshed automatically from the official Colorado voter file
Costilla County, CO has 3,012 active registered voters — 14.8% Republican, 44.9% Democratic, and 38.0% with no party affiliation, as of September 2026.
Party registration
Democratic 1,351 · Republican 445 · No Party Affiliation 1,145 · Other parties 71
Source: Motion51 voter database — official Colorado voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 3066212007 | 996 | 481 | 48.29% |
| 2 | 3066212008 | 616 | 285 | 46.27% |
Supervoters are active registered voters who cast a ballot in at least 3 of the last 4 November general elections (2018–2024). Percentages are precinct totals from the official state voter file — no individual voter information is shown. Precincts with fewer than 400 active voters are excluded.
Source: Motion51 voter database — official Colorado voter file
How Costilla County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 2,080
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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