Look at any cost of living calculator that disambiguates the five boroughs (aka counties). You’ll find all five are significantly more expensive than the average large US city. I’ll start for you. Now do Los Angeles and Chicago versus Brooklyn. Cheaper than BK by more than BK is cheaper than SF. Or really, anywhere other than Manhattan, SF, SJ, or Honolulu. That’s how expensive the rest of NYC is. Queens is similar to BK.