Name Change After Marriage in Colorado

Step 1: certified copies from the county clerk

Get certified copies of the marriage certificate from the county clerk and recorder in the county where the marriage license was issued — not a photocopy of the keepsake certificate, and not a state-level copy. Order two or three: Social Security, the DMV, and the passport office can all ask to see one, and spares avoid a reorder mid-process. Fees and processing times vary by county, so check the issuing office's current cost. The same county checklist covers a marriage or a civil union: the certified marriage or civil union license is the document in both cases.

Step 2: Social Security first

Update the Social Security record before the DMV, because the DMV verifies the name electronically against Social Security's database. File the application for a corrected card with the certified marriage certificate and proof of identity; the card is free and the Social Security number never changes. Colorado is one of the states where a marriage last-name-only change may be filed online through a personal my Social Security account, for a United States citizen with citizenship on the Social Security record, aged 18 or older, with a valid United States driver license or state ID and a United States mailing address — otherwise the filing is form SS-5 in person or by mail. Allow at least 24 hours after the Social Security visit before the driver license office, per the county checklist; the DMV's own guidance allows 24 to 48 business hours for the update to reach the database it checks, so build the gap into the plan instead of visiting both offices in one morning.

Step 3: the driver license office, in person

Book an appointment: Colorado state driver license offices operate primarily by appointment with limited walk-in availability. A legal name change is not available through the online services list — it requires an in-person visit. Bring the certified original marriage certificate (or certified original civil union certificate) plus proof of residency; originals or certified copies only. The office can change the last name with the certified license: replace the current last name with the spouse's last name (all or part of a two-part last name), or hyphenate with a hyphen or a space. It cannot change a first name without a court order, and the name must match the Social Security card. Foreign marriage certificates are not accepted. The new license or ID card is mailed within 30 days, and the fee is paid for the new credential — the amount is not stated on the pages opened for this guide, so confirm it at the office. After the license, update the vehicle title and registration, voter registration, and passport separately; the name change on one record does not flow through to the others.

Source

County checklist from the Arapahoe County Clerk and Recorder Name Change Checklist (county primary), opened via search 2026-10-30. DMV in-person requirement and Social Security-first rule from the Colorado Department of Revenue name-change and renewal pages, opened 2026-10-30 (tab contents not extracted; secondary reporting of the DMV page's 24-to-48-hour guidance is flagged as such in the research). Court-route contrast from JDF 432 / JDF 433 and the Colorado name-change guide. Online Social Security eligibility: secondary-reported, stated with its conditions, not as a primary read. This page explains how the process works and what the official rules say. It is general information, not legal advice. For a dispute about your specific situation, talk to your state motor vehicle agency or court.