Renew Registration by Mail

To renew your vehicle registration by mail, please send the following to Motor Vehicle Division, 1750 33rd Street, Suite 100, Boulder, CO 80301:

• Postcard renewal notice
• Proof of insurance if it is noted on your postcard renewal notice
  • All motor vehicle types must have insurance to be driven on Colorado highways
• Your new physical and mailing addresses if they have changed
• Proof of emissions if it is noted on your postcard renewal notice
  • Apply for an Emissions Waiver
  • Apply for an Out-of-State Emissions Extension
• Payment by check, payable to Boulder County Clerk, for the amount shown on your renewal postcard

Important Note: Renewals must be received by the last day of the grace period (one month after the expiration month).