Denver County, Colorado
Your guide to voting in Denver County, Colorado: registration, sample ballots, ID requirements and where to get local help. Home to about 729,000 people, Denver County ranks 2nd 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
In Denver County, the people who show up to vote decide who represents everyone. The next election for Denver 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 restaurants and hospitality and health care means debates over tourism and small businesses directly affect Denver County families.
About 363,000 people voted for president in Denver County in 2024 (down about 8% from 394,000 in 2020). That equals roughly 61% of the county's estimated 596,000 adults, below the statewide rate of about 68%.
That means roughly 233,000 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, Denver County would add about 11,700 voices, more than enough to decide a close local race.
Denver County packs about 4,755 people into each square mile across 153 square miles, so a single precinct can hold thousands of voters. About 12% of all Colorado residents live here.
ZIP codes in or partly in Denver County include 80010, 80012, 80014, 80022, 80033, 80110, 80111 and 80123, plus 56 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
Who runs elections in Denver 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 Denver 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 Denver 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 Denver 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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