Affiliates Mapping by Mapline The MHA network in New York State is comprised of 26 affiliates in 50 counties. Please take the time to get to know us. Affiliates Edit Search Criteria Counties Served Albany Allegany Broome Cattaraugus Cayuga Chautauqua Chemung Chenango Clinton Columbia Cortland Delaware Dutchess Erie Essex Franklin Fulton Genesee Greene Hamilton Herkimer Jefferson Lewis Livingston Madison Monroe Montgomery Nassau New York City Niagara Oneida Onondaga Ontario Orange Orleans Oswego Otsego Putnam Rensselaer Rockland Saint Lawrence Saratoga Schenectady Schoharie Schuyler Seneca Steuben Suffolk Sullivan Tioga Tompkins Ulster Warren Washington Wayne Westchester Wyoming Yates Outside New York State Any All