I was going to use the expression, "in this neck of the woods", when the thought struck me that I had no idea why woods should have necks.
neck - dictionary, fourth definition =4. A relatively narrow
elongation, projection, or connecting part: a neck of land;
The thin part connecting two more substantial portions of whatever is being discussed, and as often applied to water as land. New York is full of them: Great Neck, Little Neck, Throg's Neck (Bridge), and probably ofTroy could give many more examples.
Don't know about "Mamaroneck," though.
(sorry, there's that stutter again)
yeahbutİ [royalty check in the mail], granted the above-explained use of a "neck" of land, it would not seem to pertain to neck of the woods. The latter refers figuratively to an area, but not to a narrow connecting area.
This subject was discussed over a year ago - not calling YART, just suggesting that a search may find what you're looking for.