The City of Brookville, Ohio is governed by a municipal “charter” first adopted on November 7, 1978. The charter adopted the “Mayor-Council-Manager Plan” form of municipal government. The Council consists of six Council members and a Mayor. All seven members of Council are elected on an “at large” nonpartisan basis for four year terms. The Mayor besides being a voting member of Council is its presiding officer. The office of Mayor is recognized as the ceremonial head of the City and is also given certain specific civil responsibilities. The Mayor in Brookville lacks the power of veto. The current Mayor and Council Members may hold no other position within the City government.

The City Manager is the chief executive, administrative, and law enforcement officer of the City. The City Manager is appointed by a majority vote of Council. As such, the City Manager is responsible for the enforcement of City ordinances, signs contracts and hires as well as removes all other employees of the municipality. An individual appointed to this position must become a resident of the City within six months of their appointment. The City Manager serves an indefinite term until he or she resigns or is removed by action of the majority of Council.