Detectors are legal in the state of New York. As for individual city or county laws, I have no idea.
I live in Virginia, the only state in which they are illegal to use. We can be pulled over for it, too. When you drive into VA from MD or NC, you see these lovely huge signs that say "RADAR DETECTORS ILLEGAL"
I had one in my pocket yesterday while I was being harassed by cops who thought I was breaking into cars. :chuckles: