I live in Port Jeff Station, NY on Long Island. there is only one Supercharger within 20 miles of me.
Islandia, NY - 16 miles West
I'm surprised that despite being so densely populated and being the top region for EV registrations in NYS, there hasn't been much expansion into Central Long Island.
All the latest superchargers opened or coming soon are way East on the island.
Watermill, NY - 44.4 miles East
Riverhead, NY (Coming Soon) - 25.7 miles East
Montauk, NY (Coming Soon) - 68 miles East
Brookhaven town in Central Suffolk County is a charging ghost town, despite being the most populous township in the county.