There are a lot of people in NYC, period.
That's going to increase the base number of those with some flavor of mental instability, but I've never seen anything to suggest the ratio is different than other places.
That's going to increase the base number of those with some flavor of mental instability, but I've never seen anything to suggest the ratio is different than other places.
For NYC specifically: about 60k out of America's 500k homeless people live in New York City, which is the highest homeless population of any US city [2]. The "large majority of street homeless New Yorkers are people living with mental illness or other severe health problems" [3].
These sources confirm what I think a lot of people have seen for themselves through personal travel and experience: mental illness/instability correlates with urbanization.
[1] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5374256/
[2] https://www.statista.com/chart/6949/the-us-cities-with-the-m...
[3] https://www.coalitionforthehomeless.org/basic-facts-about-ho...
NYC = crazy
I lived there.