The following towns, villages, and city are located within the geographic boundary of the North Shore Heritage Area:
| City of Glen Cove | Town of Brookhaven |
| Town of Huntington | Town of Islip |
| Town of North Hempstead | Town of Oyster Bay |
| Town of Riverhead | Town of Smithtown |
| Town of Southold | Village of Asharoken |
| Village of Baxter Estates | Village of Bayville |
| Village of Belle Terre | Village of Brookville |
| Village of Centre Island | Village of Cove Neck |
| Village of East Hills | Village of East Williston |
| Village of Floral Park | Village of Flower Hill |
| Village of Great Neck | Village of Great Neck Estates |
| Village of Great Neck Plaza | Village of Greenport |
| Village of Head-of-the-Harbor | Village of Huntington Bay |
| Village of Kensington | Village of Kings Point |
| Village of Lake Grove | Village of Lake Success |
| Village of Lattingtown | Village of Laurel Hollow |
| Village of Lloyd Harbor | Village of Manorhaven |
| Village of Matinecock | Village of Mill Neck |
| Village of Mineola | Village of Munsey Park |
| Village of Muttontown | Village of New Hyde Park |
| Village of Nissequogue | Village of North Hills |
| Village of Northport | Village of Old Brookville |
| Village of Old Field | Village of Old Westbury |
| Village of Oyster Bay Cove | Village of Plandome |
| Village of Plandome Heights | Village of Plandome Manor |
| Village of Poquott | Village of Port Jefferson |
| Village of Port Washington North | Village of Roslyn |
| Village of Roslyn Estates | Village of Roslyn Harbor |
| Village of Russell Gardens | Village of Saddle Rock |
| Village of Sands Point | Village of Sea Cliff |
| Village of Shoreham | Village of the Branch |
| Village of Thomaston | Village of Upper Brookville |
| Village of Williston Park | |
PHOTO ABOVE: PECONIC RIVER, RIVERHEAD - JOANNE DRIELAK