NRA numbers were my first thought, but are they really that stupid? I'm not even sure if you could apply that to NYC.
Where I live, in anti-gun CA, I can go in the opposite direction. One of my neighbors (albeit, "neighbors" are like 1/4 mile away) held a get together for all the "neighbors" around here last Summer. About a dozen households showed up. Standing around in the beer circle, it turned out that there were guns in every household.
Given, some of the neighbors are fudds, but they still have at least had a shotgun in the house. Even in extremely anti-gun Santa Barbara, in a pretty liberal office, 5 out of 18 people were gun owners (or the husbands had guns, and that was people that "admitted" it). That's ~25% in SJW HQ.
Also, I forget the exact numbers, but I saw some liberal news talking point that I didn't bother to read pop up on my news feed. The headline was something like, "Why 3% of gun owners own 90% of the guns".