(a) Except as provided in subsection (b), every constable shall take an oath that the constable will well and truly serve the state in the office of constable; that the constable will faithfully, and without delay, execute and return all lawful process directed to the constable; and that the constable will well and truly, according to the constable's power and ability, do and execute all other duties of the office of constable.

(b) In counties having a population of:

(c) The oath of office may be administered to the constable by any judge of the court of general sessions or other judicial officer of the constable's county.

(d) Notwithstanding any other law or interpretation thereof to the contrary, the constables in counties having a population of not less than thirteen thousand five hundred sixty-five (13,565) nor more than thirteen thousand six hundred (13,600), according to the 1980 federal census or any subsequent federal census, shall continue to be vested with all law enforcement powers and authority conferred upon other constables by subsection (b) and §§ 39-17-505, 40-6-210, 40-6-212, 55-8-152, 57-9-101, 57-9-103 and 57-9-201.

(e) Notwithstanding any other law to the contrary, the constables in counties having a population of not less than seventeen thousand four hundred seventy-five (17,475) nor more than seventeen thousand five hundred seventy-five (17,575), according to the 2000 federal census or any subsequent federal census, shall be vested with all law enforcement powers and authority conferred upon other constables by subsection (b) and §§ 39-17-505, 40-6-210, 40-6-212, 55-8-152, 57-9-101, 57-9-103 and 57-9-201.