Unincorporated Areas in the Town of Oyster Bay
- Bethpage
- East Norwich
- Glen Head
- Glenwood Landing (Portion in North Hempstead)
- Greenvale
- Hicksville
- Jericho
- Locust Valley
- Massapequa
- North Massapequa
- Old Bethpage
- Oyster Bay
- Plainview
- Seaford
- South Farmingdale
- Syosset
- Woodbury
Incorporated Villages in the Town of Oyster Bay
- Amityville – 516-264-6000 (portion only)
- Bayville – 516-628-1439 – www.bayvillevillagehall.com
- Brookville – 516-626-1792 – www.villageofbrookville.com
- Centre Island – 516-922-0606
- Cove Neck – 516-922-1885 – www.coveneck.org
- Farmingdale – 516-249-0093 – www.farmingdalevillage.org
- Lattingtown – 516-676-6920
- Laurel Hollow -516-692-8826 – www.laurelhollow.org
- Massapequa Park – 516-798-0244 – ci.massapequa-park.ny.us
- Matinecock – 516-671-7790
- Mill Neck – 516-922-6722
- Muttontown – 516-364-2240
- Old Brookville – 516-671-4664
- Old Westbury – 516-626-0800 (portion only)
- Oyster Bay Cove – 516-922-1016
- Roslyn Harbor – 516-621-0368 (portion only)
- Sea Cliff – 516-671-0080 – www.seacliff-ny.gov
- Upper Brookville – 516-624-7715
- Westbury – 516-334-1700 – (portion only) – www.villageofwestbury.org