Colorado requirements for residency are as follows:
Colorado law states that, upon establishment of residency, you have 90 days in which to register your vehicle.
Gainfully employed in Colorado.
Own or operate a business in Colorado.
Reside in Colorado for 90 consecutive days.
students, temporarily residing in Colorado and claiming another state
as their residence, may retain valid out-of-state plates.
personnel, on active duty in Colorado and claiming another state as
their home state of residence, may retain valid out-of-state plates.
employed in Colorado who commute daily from their residence to their
place of employment within Colorado may retain valid out-of-state
plates. This is restricted to only those states entering into a
reciprocal agreement with Colorado (Utah, New Mexico, Wyoming, Kansas
The following documents are required:
An out-of-state title or current registration (if your title is being held by a lien holder/lender).
your vehicle has a lien on the title, the lien holder's name and
address must be provided if not shown on the out-of-state title or
Insurance - All vehicles under 16,000 lbs. (empty weight) are required to show current proof of insurance prior to registration.
VIN Verification - Out-of-state vehicles must be inspected by the sheriff's office or town police. Form DR 2698 (PDF) is required to complete the inspection. There may be a charge for this service.