The government of New York City, headquartered at New York City Hall in Lower Manhattan, is organized under the New York City Charter and provides for a mayor-council system. The mayor is elected to a four-year term and is responsible for the administration of city government. The New York City Council is a unicameral body consisting of 51 members, each elected from a geographic district, normally for four-year terms. Primary elections for local offices use ranked choice voting, while general elections use plurality voting. All elected officials are subject to a two consecutive-term limit. The court system consists of two citywide courts and three statewide courts.

New York City Hall is the seat of New York City government, located at the center of City Hall Park in the Civic Center area of Lower Manhattan, between Broadway, Park Row, and Chambers Street. Constructed from 1803 to 1812, the building is the oldest city hall in the United States that still houses its original governmental functions. The building houses the office of the Mayor of New York City and the chambers of the New York City Council. While the Mayor's Office is in the building, the staff of thirteen municipal agencies under mayoral control are located in the nearby Manhattan Municipal Building, one of the largest government buildings in the world, with many others housed in various buildings in the immediate vicinity.