CO

Colorado Voter Registration Guide

Current voter registration requirements, birth certificate ordering information, voter ID rules, deadlines, and official election office links for Colorado.

No proof-of-citizenship requirementID requiredChecked Jul 27, 2026 · re-check due
Interactive map of the United States showing proof-of-citizenship law status by state
Active Proof-of-Citizenship Law
Law on Books (Not Enforced)
No Requirement
Voter ID Requirement
ID is required for in-person voting contexts in Colorado; state guidance also distinguishes registration method deadlines and in-person voter service options through Election Day
Online Registration
Available
Registration Deadline
Colorado voters may register through Election Day; to receive a ballot by mail, online or mail registration must be submitted by the 8th day before Election Day
Proof of Citizenship Law
No proof-of-citizenship requirement
Status detailsNo active statewide documentary proof-of-citizenship voter-registration requirement as of July 2026. Colorado conducts major elections by mail ballot and supports same-day in-person registration.

What to Do Now

  1. 1Check if you have one of the accepted documents (passport, birth certificate, naturalization certificate)
  2. 2If your name has changed, get a passport in your current legal name
  3. 3Order your birth certificate now if you don't have one
  4. 4Verify your voter registration is current
  5. 5Keep originals safe — under the SAVE Act, photocopies would not be accepted

Frequently Asked Questions

Do I need proof of citizenship to register to vote in Colorado?

No. Colorado does not currently require documentary proof of citizenship to register to vote. However, if the federal SAVE Act passes, all states would be required to collect proof of citizenship for voter registration. Getting your documents in order now is recommended.

How much does a birth certificate cost in Colorado?

A certified birth certificate in Colorado costs Colorado Office of Vital Records fee schedule (effective Jan 1, 2026) lists birth certificates at $25.00 for first copy and $20.00 for additional copies ordered at the same time. Processing times vary — check the state vital records office for current turnaround. Use the official Colorado vital records office for current details: https://cdphe.colorado.gov/vitalrecords. Remember: you must order from the state where you were born, not where you currently live.

What voter ID do I need in Colorado?

Colorado's voter ID rules: ID is required for in-person voting contexts in Colorado; state guidance also distinguishes registration method deadlines and in-person voter service options through Election Day. Check with your local election office or visit the Colorado Secretary of State website for specific details on acceptable forms of identification.

Can I register to vote online in Colorado?

Yes, Colorado offers online voter registration. Visit your state's election office website to register or update your registration. Registration deadline: Colorado voters may register through Election Day; to receive a ballot by mail, online or mail registration must be submitted by the 8th day before Election Day.