I'll argue New York City is at the point of cyberpunk, especially since it's one of the least American places to be in within the USA.
NYC cost of living and tense competition makes you push yourself in order to keep afloat, unless you want to get tossed in welfare and live in one of the many projects this city has to offer. You might even join the growing homeless population that the city likes to ignore if you can't get welfare.
On top of that, NYPD is said to be the 7th strongest army in the world and for good reason too. It's well supplied to counter terrorism, extremely organized, good manpower and quite aggressive when it comes to doing their job and beyond. They set up an extensive amount of cameras throughout Manhattan with a response time of a minute or less. They also know how to suppress any form of resistance.
Crime hasn't been as bad as it was like in the 70s or 80s, but once in a while there's a gun bust in The Bronx. The Bronx is the worst part out of all the five boroughs. It's highly ignored and avoided by many besides those that come from that area. Recently it faced a outbreak of legionnaires 'twice' in the same month with over 100 hospitalized, just to give you a idea how ignored that borough is.
With all that, it's a very trendy city with in the now popular culture. People wearing the latest clothing, using the current tech trend, there is always something happening in the city and really doesn't sleep. It's as close as one will get to a overpopulated dense sprawl you'll get in the United States.