Page "Service of process" Paragraph 11

Most jurisdictions require or permit process to be served by a court official, such as a sheriff, marshal, constable or bailiff.

There may be licensing requirements for private process servers, as is the case in New York City, Alaska, Arizona, California, Illinois, Montana, Nevada, and Oklahoma.

Texas process servers are currently certified by order of the Supreme Court and are regulated through the Process Server Review Board, consisting of members of the industry authorized by the Supreme Court.