Washington Application to Amend a Marriage Certificate (DOH 422-309)
Official state formCorrections and amendmentsForm DOH 422-309Free downloadLast verified November 10, 2026
Use this application to fix or update items on a Washington marriage certificate. It is mailed to the Center for Health Statistics at the Washington State Department of Health. It is not for annulling a marriage or changing Social Security numbers or signatures.
Who can use this form
- Person A and Person B listed on the certificate, only for their own personal information and their parents' information
- The officiant listed on the certificate, only for the date and place of marriage
- The officiant does not need a proof document
What to send with it
- Pages 3 and 4 of the application, filled out in blue or black ink
- A copy of a government-issued photo ID for every person who signs the application
- Supporting proof documents that show the full name and date of birth of the person whose information is being amended
- Proof that you qualify to ask for the amendment, if needed
- Optional: a certificate issued within the last year for a free exchange, or a certificate order form with payment
Where to send it
- Mail to
- Center for Health Statistics Attn: Amendments PO Box 47814 Olympia, WA 98504-7814
- State fee
- Not provided
- Typical processing
- 4 to 6 weeks, per the office's amendment page
- Form revision
- November 2026
- Source
- Official government page