Boulder County government offices are closed Wednesday, June 19, in observance of Juneteenth. Primary Elections Vote Center locations are open.

Monday June 17, Red Flag Warning. No Open Burning in Boulder County

Voter dropping off ballot at 24-hour ballot dropbox, Boulder County Elections logo, person wearing "I Voted" sticker


Bicycle with ballot perched on handlebars parked in front of Boulder County Drop Box

Election Information

  • Key Dates
  • FAQs
  • Important election information
  • Ballot Returns Data
Smiling woman typing at computer

Voter Registration

  • Register to Vote
  • Update Your Voter Registration
  • Check Your Voter Registration Status

Voting Locations, Ballot Return, Replacement Ballots

  • 24-Hour Drop Boxes
  • Vote Center Locations
  • Replacement Ballots
  • Ballot-to-Go

What’s on My Ballot?

  • View sample ballots
  • Research candidates
  • Spanish language ballots
Woman dropping secure envelope into drop box

Información para votantes en Español

  • Fechas Clavas
  • Preguntas Frecuentes
  • Información Electoral Importante
Hand holding a Boulder County Clerk and Recorder badge scanning into a secure door.

Elections Security

  • Ballot Processing
  • Voting System Security
  • Pre-Election Testing
  • Post-Election Audit
  • Informational Videos

Know Your Voting Rights

  • Informacion en español
  • Language Assistance
  • Criminal Justice System
  • ID Requirements
  • ADA Accessibility

Stay up to date

Boulder County Elections only emails key election information and deadlines.
Option 1 (recommended) – Update your voter registration to include an email address. Option 2: Signup for Voter & Election Emails (note that if you move out of Boulder County, you will need to unsubscribe).

Boulder County Election News (press releases and blog posts)

Contact Us

Elections Division


303-413-7728 (Fax)
Boulder County Elections website

7:30 a.m. to 5 p.m.
Closed Fridays


Boulder: 1750 33rd St. (main office)
Map and Directions Boulder Location

Longmont: 529 Coffman St.*
Map and Directions Longmont Location

Lafayette: 1755 S. Public Road*
Map and Directions Lafayette Location
* Longmont and Lafayette locations only offer paper voter registration forms

Mailing Address

1750 33rd St., Suite 200
Boulder, CO 80301

Boulder County Elections logo