Long Island New York is comprised of two counties (Nassau County and Suffolk County), two cities (Long Beach and Glen Cove), numerous local towns, villages, hamlets, postal zones and designated places.

• County:

  A county is a municipal corporation, a subdivision of the state, created to perform state functions; a "regional government. All counties are divided into cities, towns and Indian reservations.

• City:

  A city is a unique government entity with its own special charter. Cities are not sub-divided, except into neighborhoods which are informal geographic areas.

• Town:

  A town is a municipal corporation and encompasses all territory within the state except that within cities or Indian reservations. Towns can be sub-divided into villages and hamlets.

• Village:

  A village is a general purpose municipal corporation formed voluntarily by the residents of an area in one or more towns to provide themselves with municipal services. The pattern of village organization is similar to those of a city. A village is divided into neighborhoods, which are informal geographic areas.

• Hamlet:

  A hamlet is an unincorporated area in one or more towns that is governed at-large by the town(s) it is in. A hamlet is divided into neighborhoods, which are informal geographic areas.

• Postal Zone:

  A postal zone "City and "Town" is an administrative district established by the U.S. Postal Service to deliver the mail. Postal zone "City" and "Town" may or may not conform to municipal or community border. Thus, postal zone location does not always determine city, village or hamlet location.

• Designated Place:

  A designated place is a term derived from the term "Census Designated Place" or CDP in censuses beginning with 1980. It replaced the designation (U) or unincorporated. A designated place is similar to that of a hamlet.

In an effort to simplify things we have broken down the list into Nassau and Suffolk County.
The list of Long Island towns then drills down to the specific areas governed by that town.

Complete List of Long Island Towns > Nassau County Towns NY

Complete List of Long Island Towns > Suffolk County Towns NY

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Nassau County NY

• Baldwin
  
• Bellmore Chamber of Commerce
  
• Elmont
  
• Franklin Square
  
• Freeport
  
• Freeport Village
  
• Garden City
  
• Levittown
  
• Lynbrook Chamber of Commerce
  
• Merrrick Chamber of Commerce
  
• New Hyde Park Village
  
• Rockville Centre
  
• Uniondale
  
• Valley Stream
  
  

• Great Neck Village
  
• Great Neck Chamber of Commerce
  
• Manhasset
  
• New Hyde Park
  
• Port Washington
  
• Saddle Rock
  
• Sands Point
  
  

• Bayville
  
• Bethpage
  
• Hicksville Chamber
  
• Massapequa Park
  
• Plainview-Old Bethpage Chamber
  
• Syosset
  
• Syosset/Woodbury
  
  

Suffolk County NY

• Amityville
  
• Babylon Village
  
• Lindenhurst
  
  

• East Northport Chamber
  
• Huntington Chamber
  
• Huntington Life
  
• Northport Village
  
• Northport Chamber of Commerce
  
  

• Bellport
  
• Blue Point
  
• Brookhaven
  
• Mastic, Mastic Beach & Shirley
  
• Port Jefferson
  
• Patchogue - Medford
  
• Stony Brook
  
  

• East Hampton Chamber
  
• East Hampton Guide
  
• Montauk Chamber
  
  

• Bay Port-Blue Point Chamber
  
• Bay Shore LI
  
• East Islip Historical Society
  
• Oakdale
  
• Ocean Beach
  
• Sayville
  
• West Islip
  

• Riverhead Chamber of Commerce
  

• St. James
  
• Smithtown Chamber
  
  

• East Quogue
  
• Hampton Bays
  
• Sag Harbor
  
• Sag Harbor Chamber
  
  

• Greenport
  
• Mattituck Chamber