A list of Westchester County cities and towns are below, with the number of agencies available in each location listed next to the city or town name. Agencies such as the Bee-Line Bus and Westchester Library System are listed as County-Wide. Please note: many agencies do not require in-person visits. While their location is important for such actions as mailing items to them, it may be best to contact them via telephone or email.
- Albany (9)
- Ardsley (4)
- Bedford (1)
- Brewster (1)
- Briarcliff Manor (4)
- Bronx (3)
- Bronxville (5)
- Buchanan (0)
- Carmel (4)
- Cold Spring (1)
- Cortlandt (4)
- County-wide (33)
- Croton (3)
- Dobbs Ferry (4)
- Eastchester (3)
- Elmsford (6)
- Garrison (0)
- Greenburgh (3)
- Harrison (5)
- Hartsdale (5)
- Hastings (3)
- Hawthorne (3)
- Irvington (2)
- Katonah (3)
- Larchmont (4)
- Lewisboro (1)
- Long Island City (1)
- Mahopac (1)
- Mamaroneck (6)
- Manhattan (19)
- Mohegan Lake (1)
- Montrose (3)
- Mount Kisco (9)
- Mount Pleasant (0)
- Mount Vernon (33)
- New Castle (1)
- New Rochelle (29)
- North Castle (2)
- North Salem (1)
- Ossining (8)
- Out of area (23)
- Peekskill (21)
- Pelham (3)
- Pelham Manor (1)
- Pleasantville (4)
- Port Chester (14)
- Poughkeepsie (1)
- Pound Ridge (2)
- Purchase (4)
- Putnam (5)
- Queens (1)
- Rye (5)
- Rye Brook (2)
- Scarsdale (2)
- Sleepy Hollow (7)
- Somers (3)
- Tarrytown (10)
- Tuckahoe (2)
- Valhalla (9)
- White Plains (66)
- Yonkers (50)
- Yorktown Heights (5)