(a)
(1) The summons and other process mentioned in § 16-19-405 and the subpoenas mentioned in § 16-19-501 shall be directed to and shall be served by any constable in the county in which the party or parties to be served reside. The constables are given as full powers to serve such process as they are given by law to serve the process of justices of the peace of their own county.
(2) Each constable may execute civil process throughout the county.
(b) In no case shall the constable be allowed mileage for the service of any process he may serve outside of his township, other than from the residence of the defendant in such process to the nearest justice of the peace in the township in which that defendant resides.