Adams County, Colorado
Voting in Adams County, Colorado? Find registration links, ID rules, early and absentee voting options and your sample ballot here. Home to about 543,000 people, Adams County ranks 5th in population among Colorado's 64 counties. In Colorado, the county clerk and recorder runs elections, mails every active voter a ballot and staffs voter service centers.
Next Election
March 21, 2028
Voter Portal
Register Online
What's On My Ballot?
ID Requirements
Absentee / Early Voting
Registration Deadline
Register online or by mail at least 8 days before an election; same-day registration is available in person, but registering early helps you get your ballot by mail.
Why Voting Matters
Every eligible adult in Adams County, Colorado holds the same power on Election Day: one vote that counts exactly as much as anyone else's. The next election for Adams County voters is Colorado's 2028 presidential primary, on a date the governor will set no later than March 21, 2028, though a statewide ballot issue could come first on November 2, 2027; local elections can come sooner, so check your local election office. Local work in health care and construction means debates over health care costs directly affect Adams County families.
In the 2024 presidential election, about 233,000 ballots were cast in Adams County, about the same as the 237,000 cast in 2020. With roughly 410,000 adults living in the county, that is around 57% of adult residents, below the statewide rate of about 68%.
That means roughly 177,000 adult residents did not cast a presidential ballot. Some are not eligible, but many are, and that is a lot of untapped power. If just one in 20 of them voted, Adams County would add about 8,840 voices, more than enough to decide a close local race.
Adams County covers about 1,167 square miles, with roughly 465 residents per square mile. The county is home to about 9.1% of Colorado's population.
ZIP codes in or partly in Adams County include 80002, 80003, 80010, 80011, 80019, 80020, 80022 and 80023, plus 37 more. Take two minutes to confirm your registration, preview your ballot with the links on this page, and decide when and how you will vote. Bring a neighbor along.
Voter Assistance Resources
Local election help in Adams County: In Colorado, the county clerk and recorder runs elections, mails every active voter a ballot and staffs voter service centers. For registration, polling places, early voting and absentee ballots, contact the Adams County clerk and recorder.
Statewide directory, Colorado Secretary of State's county clerk roster:
https://www.coloradosos.gov/pubs/elections/Resources/files/CountyClerkRosterWebsite.pdf
See your sample ballot. Go Vote Colorado:
https://www.coloradosos.gov/voter/pages/pub/home.xhtml
You can also preview a personalized ballot at Vote411.org.
Free, nonpartisan help is available before and on every Election Day: call or text the Election Protection hotline at 866-OUR-VOTE (866-687-8683). Spanish: 888-VE-Y-VOTA (888-839-8682). Asian languages: 888-API-VOTE (888-274-8683).
Voters with disabilities in Adams County can ask for an accessible voting machine, curbside voting where offered, and help from a person of their choice. If you run into barriers, contact Disability Law Colorado, Colorado's Protection and Advocacy agency, at (303) 722-0300. VoteRiders (844-338-8743) offers free help with voter ID.
Need a ride? Many local transit agencies and ride services offer free or discounted rides to the polls on Election Day, so check what is available before the next election. See our Colorado voter page for statewide options. Details can change, so confirm with the official election office.
Military and overseas voters can get help from the Federal Voting Assistance Program at 1-800-438-VOTE (8683) or fvap.gov.
Sign up to be an election worker
Election workers (often called poll workers) keep voting running smoothly in Adams County. Most are paid for their time, get free training, and help their neighbors cast their ballots. You can work a full day, a shorter shift, or help before Election Day. County and municipal election offices recruit and train their own workers, and the EAC's Help America Vote page links to yours. Find out how to sign up:
https://www.eac.gov/help-america-vote
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