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Making changes to birth certificates

The state of Washington Center for Health Statistics has adopted a birth correction policy. The changes will take effect January 15, 2015. Every birth certificate ordered from the King County Vital Statistics Office will have a copy of the new policy along with updated forms to fill out for corrections. As of January 15, 2015 the state of Washington is requiring both parents signatures on the Affidavit of Correction to process corrections for names on a birth certificate. Our office will continue to send the new policy for the next few months to ensure that our customers have the correct form for processing birth corrections. The Affidavit of Correction must be returned within one year of the issue date to receive a replacement copy for free. If after the year, the fee for a birth certificate is $20.00.

Download the Affidavit of Correction and the policy (PDF). Print out the form and follow the instructions for completing the form.

If you have any questions about processing the Affidavit of Correction, contact the Washington State Center for Health Statistics at 360-236-4300, toll free 1-800-525-0127 for Washington state residents only or King County Vital Statistics Office at 206-897-4551.

Making changes to death certificates

Changes to death certificates are handled on a case-by-case nature. To request changes, click here to contact us or call Vital Statistics at 206-897-4551.

Adding the father to a birth certificate (if not already included)

In Washington state, if the parents are not married at the time of the birth of the child, only the mother is listed on the child's birth certificate. To add the father's name, the Affidavit for Correction Form cannot be used but instead, you will need to fill out a Paternity Acknowledgement form.

The father and mother of the child will need to sign the Paternity Acknowledgment with a Notary Public official as a witness who will stamp it as an official document. Mail the Paternity Acknowledgment to the Washington State Center for Health Statistics along with payment of $15.00. (Notary Public officials are private individuals who may charge a separate nominal fee for their services.)

If you have any questions about processing the Paternity Acknowledgment, contact the Washington State Center for Health Statistics at 360-236-4300 or toll-free, 800-525-0127.

To request a Paternity Acknowledgment form to be mailed to you (free of charge), please complete the form below. The Paternity Acknowledgment form is not available in a downloadable format as it comes in multiple color-coded and carbon-based pages. Fields marked with a * are required.
First and last name of person receiving the form*


Street address*


City, State/Province and Zip/Postal Code*


Email address


Phone number with area code (optional, if we have questions)


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