The Western District (12 seats) consisted of Herkimer, Ontario, Otsego, Tioga, Onondaga, Schoharie, Steuben, Chenango, Oneida, Cayuga, Genesee, Seneca, Jefferson, Lewis, St. Lawrence, Allegany, Broome, Madison, Niagara and Cortland counties.
Note: There are now 62 counties in the State of New York.