Stage 1 Fire Restrictions, effective Aug. 12, 2025, for unincorporated western Boulder County.

Visit the Boulder County Ballot Measures website for information about possible 2025 ballot measures.

Boulder County government offices closed Monday, Sept. 1, in observance of Labor Day.

Renew by Mail

Boulder County Motor Vehicle offices are open Monday – Thursday, 7:30 a.m. – 5 p.m. Closed Fridays. Appointments are required for in-person services. Registration renewals need to be completed online, by mail or drop box, or at a self-service kiosk and are not an in-person service.

Colorado Department of Revenue DMV warns of impersonating scam messages!
The Colorado DMV does not send unsolicited texts demanding payment or requesting personal information. Read more about the scams on the Colorado DMV website.

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
  • Payment by check, payable to Boulder County Clerk, for the “Total Due” amount on your postcard
    • Your postcard will list two amounts: one that includes a State Parks pass and one that excludes a State Parks pass (the difference is $29, the cost of the pass). If you would like a pass, pay the amount that includes the pass. Otherwise, pay the lower amount. Learn more about this pass.

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

Motor Vehicle Division

Contact Us

Motor Vehicle Division

7:30 a.m. - 5 p.m.
Monday - Thursday
Closed Fridays

Motor Vehicle Homepage
Contact Us Form
Contáctenos - Formulario en línea

Phone: 303-413-7710
Fax: 303-413-7706

Office / 24-Hour Drop Box Locations

If submitting paperwork via drop box, please place documents in a folder or envelope marked “Motor Vehicle” and include your contact information.

1750 33rd St., Boulder
24-Hour Drop Box: Stand-alone box outside doors on parking lot side (Directions)

1755 S. Public Road, Lafayette
24-Hour Drop Box: Slot on exterior wall to the right of the main doors (Directions)

529 Coffman St., Longmont
24-Hour Drop Box: Stand-alone box outside entrance doors (Directions)

Mailing Address

1750 33rd St., Suite 100
Boulder, CO 80301

Connect With Us