In Colorado, motor vehicles are titled and registered through the county clerk's office in the motor vehicle owner's county of residence. Title and registration is required in Colorado:
- within 60 days of purchase;
- within 90 days of becoming a Colorado resident;
- within 45 days after returning to the United States from a foreign jurisdiction; and
- for nonresident business owners who own and operate a motor vehicle trailer, a semi‑trailer, or a trailer coach.