What has the world come to, I'm from the 312
Where cops don't come through and dreams don't come true

from Kanye West (Ft. Ghostface Killah & Pusha T) – New God Flow Lyrics on Rap Genius

“312” is the area code for Chicago, Kanye’s home town (though he himself comes from the south side, which has an area code of 773 — a new area code was established once the 312 #’s reached a critical saturation level).

The ‘cops don’t come through’ part of the line is probably a reference to decisions made by the Chicago police force in February 2013, to no longer attend to to reports for crimes in which the suspect is no longer on the scene, and the victim isn’t in immediate danger.
Find more on the policy changes here

It’s an anomaly for any musician to have Kanye’s level of success, but even more so considering from where he comes. Chicago, like many big urban population centers, has a dodgy history concerning its police force and the Black population; additionally, the urban environment doesn’t offer much in the way of hope or opportunity for young Black men — so Kanye has to step back and marvel at the incredulity of it all

To help improve the meaning of these lyrics, visit "New God Flow" by Kanye West (Ft. Ghostface Killah & Pusha T) Lyrics and leave a comment on the lyrics box