Apostilles & Authentications

The Office of the Secretary of State provides authentication and apostille service to U.S. citizens and foreign nationals on all documents that will be used overseas. Types of documents include corporate documents such as company bylaws and articles of incorporation, power of attorney, patent applications and trademarks, diplomas, transcripts, letters relating to degrees, marital status, references and job certifications, home studies, deeds of assignments, distributorship agreements, papers for adoption purposes, etc.

All Documents must include

  • An original signature
  • An original South Dakota Notary Public signature
  • $25.00 per document or a flat fee of $250 for 10 or more documents. Please make the check or money order payable to the Secretary of State. We also accept cash, American Express, Visa and Mastercard.

All cover letters must include

  • The name of the country where the documents will be sent. (Countries require different certifications and the document cannot be certified without this information.)
  • A daytime phone number for possible questions.
  • Information on where the documents should be mailed after processing.
    We will only send the documents back by 1st class mail to an address within the United States.  If you want to track your documents and/or want them mailed in a different manner, you must enclose a pre-paid, self-addressed envelope for that service.

Request Form - If you would rather complete the Apostille / Certificate of Authentication Request form instead of a cover letter.

If the document is a vital records document (birth certificate, marriage license, etc), you may contact any county Register of Deeds office or the State Department of Health (605-773-4961) and request a certified copy of that document; then submit the certified copy to the Office of the Secretary of State with the filing fee of $25.00 per document or $250 for 10 or more documents.

Most documents will be processed and mailed on the day they are received. You may also visit the Office of the Secretary of State to have the documents processed. However, please contact the Apostille Administrator, (email address: to make an appointment, so that help is available when you arrive. You may call 605-773-2797.

Further Contact Information:

Office Hours: 8am to 5pm Central Time

Phone: (605) 773-2797
Fax: (605) 773-4550

Mailing Address:
    Secretary of State
    Capitol Building
    500 East Capitol Avenue
    Pierre, SD 57501-5070

Physical Address:
    215 E. Prospect Ave.
    Pierre, SD 57501



More information on apostilles and authentications is available through the U.S. State Department Office of Authentication by phone (202) 647-5002 or website ( ).