Hey, there's no need to be a prick. The Bronx and Brooklyn are among the most "urban" places in the US outside of Manhattan itself. Philadelphia, Chicago, DC etc. are "mixed" too if you're going to make that argument.
Huh? How was I being a prick lol?. I wasn't and if you felt that I was then, that wasn't my intention.
Also, The Bronx and Brooklyn are urban of course. However, if you drive a few more minutes then you'll find yourself in neighborhoods where it looks just like many suburbs in America (i.e. Riverdale in The Bronx and Mill Basin in Brooklyn).
You also can't compare NYC to other cities. The 5 boroughs are connected by bridges, underground subway tunnels and a ferry. There's also a reason why those of us who live in the outer boroughs often say that "we're going into the city" when we're going to Manhattan.
That's because Manhattan is not just urbanized but COMPLETELY urbanized. There are no parts of Manhattan where you can find suburban like homes like how you can find in the outer boroughs.
In a way, the outer boroughs are suburbs of Manhattan.
Up until 1898, Manhattan was exclusively "New York City". Brooklyn was a completely seperate city, The Bronx was apart of Westchester County and Queens was apart of Nassau County. In 1898, there was consolidation that made Brooklyn renounce it's city status, a part of Nassau County would break away and become Queens, and a part of Westchester County would break away and become The Bronx. This is how the 5 boroughs and modern NYC came to be.