Missouri Revised Statutes Title XXXV. Civil Procedure and Limitations § 506.140. Who shall serve process--fees paid to special process server may be taxed as costs in a claim

1. Service of process, except as otherwise provided, shall be made by a sheriff, or such sheriff's deputy, or in case the sheriff in any cause is for any reason disqualified, then process may be issued to and served by the coroner of the county in which such process is to be served; or some person, other than a sheriff or coroner, may be specially appointed by the court or the circuit clerk following procedures established by local court rules for service of process in any cause, but such appointment shall be valid for service of the process only for which such person was specially appointed.

2. A party may file an application to the court requesting that any fees paid to a special process server be awarded in any judgment entered in the action. The court may enter judgment in the reasonable amount of such fees.