League of Women Voters

Colorado ID Needed for Voter Registration

Your completed voter registration form must contain your Colorado driver's license number or your Department of Revenue ID number. If you do not have a driver's license or department of revenue ID number, then you will need to complete a paper registration form and provide the last four digits of your Social Security number. You cannot use a Social Security number when registering to vote online. If you do not have any of these forms of ID, please check the appropriate boxes on the paper registration application form. A unique identifying number will then be assigned to you by the state and you will still be registered to vote. However, if the identification section is left blank and you do not check the box(es) indicating you do not have identification, you will not be registered to vote.

For more information please contact your county clerk and recorder or contact your local League for more information.

  • A valid U.S. passport
  • A valid Colorado drivers' license
  • Valid ID card issued by the Department of Revenue
  • A valid employee identification card with a photograph of the eligible elector issued by any branch, department, agency, or entity of the U.S. government or Colorado, or by any Colorado county, municipality, board, authority, or other political subdivision of this state
  • A valid pilot's license issued by the Federal Aviation Administration or other authorized agency of the United States
  • A U.S. military identification card with photograph of the elector
  • A copy of a current utility bill, bank statement, government check, paycheck, or other government document that show the name and address of the elector. A cable bill, a telephone bill, documentation from a public institution of higher education in Colorado containing at least the name, date of birth, and residence address of the student elector, or a paycheck from a government institution are also sufficient forms of identification
  • A valid Medicare or Medicaid card
  • A certified copy of a U.S. birth certificate
  • Certified documentation of naturalization
  • Valid student ID card with a photo issued by an institute of higher education in Colorado
  • Valid veteran ID card with a photo issued by the US Department of Veterans Affairs Health administration
  • Valid ID card issued by a federally recognized tribal government certifying tribal membership

Any form of identification that contains an address must have a Colorado address to be valid.



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Election Day Problems?

Call one of these hotlines:
1-866-OUR-VOTE (866-687-8683)
1-888-VE-Y-VOTA (en Español)
1-888-API-VOTE (Asian multilingual assistance)
1-844-418-1682 (Arabic)


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