(A) Except as otherwise provided in division (B) of this section or in another section of the Ohio Revised Code, each officer of the municipality or of any department or board of the municipality, whether elected or appointed as a substitute for a regular officer, shall be an elector of the municipality and, before entering upon official duties, shall take an oath to support the Constitution of the United States and the Constitution of the state and an oath that the officer will faithfully, honestly, and impartially discharge the duties of the office to which elected or appointed. These provisions as to official oaths shall extend to deputies, but they need not be electors.
(B) Neither this section nor any section of the Ohio Revised Code requires, or shall be construed to require, that a Fire Chief be an elector of the municipality.
(R.C. § 733.68)