Elections Division - Register to Vote

Registration Form
You may register to vote by completing and returning a Colorado Voter Registration Form. 
Please ensure that you sign the form before returning it to the Boulder County Clerk & Recorder's Office.

Register by Fax/Email/Mail

• Fax: 303-413-7728 or 303-413-7750

• Email as a signed PDF

• Mail: Boulder County Elections Division
          1750 33rd Street, Suite 200
          Boulder, CO 80301

Register in Person
Boulder County Clerk & Recorder's Office:

• 1750 33rd Street, Boulder

• 529 Coffman Street, Longmont

• 722 Main Street, Louisville

The voter registration takes effect as of the postmark date on the form, or if not legible, the date the form is received in the Boulder County Clerk & Recorder's Office. You may also register at any municipal clerk's office or any driver's license office.

It is crucial to update your voter information with the Clerk & Recorder's Office immediately after moving to a new address.

Registration Requirements
State law requires that you provide your Colorado Driver's License number, Department of Revenue Identification Number or the last four digits of your social security number in order to register to vote.

If you do not have a Colorado driver's license, and are registering by mail, you must remember to check the "I do not have a Colorado driver's license" box on the form. Additionally, you will be required to present a valid form of identification at your polling place in order to receive your ballot and vote.

To register to vote in Colorado, you must:

• Be a U.S. Citizen.

• Be 18 years of age or older.

• Register no later than 29 days before the election and be 18 years old on or before the date of the election in which you want to vote.

• Reside in Colorado and at your present address at least 30 days before the election.

• Important: You must include your complete address with apartment number or unit number to ensure your registration confirmation and to receive important mailings.

Documents denoted by PDF indicate the need for Adobe Reader:

Last Update: