a. Each community district shall:
(1) Lie within the boundaries of a single borough, except as provided in subdivisions d and e of this section, and coincide with historic, geographic and identifiable communities from which the city has developed;
(2) Be suitable for the efficient and effective delivery of those services of municipal agencies required to be made coterminous with the community districts, pursuant to section two thousand seven hundred four, including particularly the service and districting requirements of the police and sanitation departments; and,
(3) Be compact and contiguous and have a population of not more than two hundred fifty thousand persons.
b. Community districts shall be as nearly equal in population with each other as is possible under the criteria in paragraphs one, two and three of subdivision a of this section.
c. With respect to the city's central business district in the borough of Manhattan from fifty-ninth street south, the council may adopt as part of the community district map, districts which shall reflect its unique character as the city's financial, business and entertainment center. In so doing, the council shall take into consideration the residential, working and other daytime population as well as the hotel and transient or other nighttime populations and adhere as nearly as possible to the provisions of paragraph (3) of subdivision a of this section.
d. The community district map for the borough of Manhattan shall include Roosevelt Island, located in the east river, as part of a community district in the borough of Manhattan, immediately opposite and to the west of Roosevelt Island. However, for the purposes of meeting the requirements of section twenty-seven hundred four relating to coterminality of local services, section twenty-seven hundred five relating to district service cabinets and section twenty-seven hundred seven relating to agency budget and service statements, Roosevelt Island shall be deemed included within a community district of the borough of Queens immediately opposite and to the east of Roosevelt Island. The chairperson of the community board of the Manhattan community district which includes Roosevelt Island, or his or her designee, shall be a member of the district service cabinet of each of the community districts in which Roosevelt Island is included in the respective boroughs.
e. The community district map for the borough of the Bronx shall include that portion of the borough of Manhattan which lies north of the Harlem River.