The City of Garden City operates under the council-manager form of government. A Mayor and 6 member City Council are elected to serve as the legislative or policy making body of the City.  The City Council appoints a professional city manager with executive and administrative abilities to serve as the chief administrative officer of the city government managing the City's daily operations.

The City manager appoints the heads of all departments of the city, except the city attorney, with the approval of the city council. He prepares and administers the city's annual budget, administers personnel and labor relations, and provides oversight for the city's economic development, purchasing, and public relations activities. The City Manager also prepares policy recommendations for, and provides administrative support to, the City Council. He manages nine City departments and serves as the City's official ambassador to the community and other government units.