323,848
Active registered voters
283
Precincts
74,119
Supervoters (22.89%)
5
Presidential cycles of results
Data as of September 22, 2026 · refreshed automatically from the official Colorado voter file
Adams County, CO has 323,848 active registered voters — 17.7% Republican, 27.2% Democratic, and 52.1% with no party affiliation, as of September 2026.
Party registration
Democratic 87,971 · Republican 57,469 · No Party Affiliation 168,673 · Other parties 9,735
Source: Motion51 voter database — official Colorado voter file
Most reliable-voting precincts
| # | Precinct | Active voters | Supervoters | Supervoter % |
|---|---|---|---|---|
| 1 | 4215601244 | 1,256 | 817 | 65.05% |
| 2 | 4215601247 | 1,101 | 674 | 61.22% |
| 3 | 7192401009 | 932 | 564 | 60.52% |
| 4 | 4215601249 | 442 | 264 | 59.73% |
| 5 | 4215601243 | 1,047 | 624 | 59.6% |
| 6 | 7192401008 | 1,086 | 602 | 55.43% |
| 7 | 4215601251 | 1,662 | 911 | 54.81% |
| 8 | 4215601245 | 459 | 248 | 54.03% |
| 9 | 4215601248 | 1,378 | 711 | 51.6% |
| 10 | 4215601283 | 917 | 465 | 50.71% |
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 Adams County voted for president
■ Democratic % ■ Republican % · 2024 total votes cast: 233,336
Election results are public records.
Source: Official county canvasses via MIT Election Data + Science Lab
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