1951 – First Community Planning Councils established by the Manhattan Borough President
1963 – 62 Community Planning Boards established by the New York City Charter
1968 – Local Law 39 expands the powers of Community Planning Boards
1975 – 59 Community Boards established by the Charter Revision Commission
1989 – Charter Revision Commission changes the structure of City government and increases the role of Community Boards in environmental review process

Currently there are 59 Community Boards:
12 in the Bronx
18 in Brooklyn
12 in Manhattan
14 in Queens
3 in Staten Island

With a maximum of approximately 250,000 people per Community District.