1. the area code for New Brunswick. We only have one, just like Nova Scotia , Newfoundland, etc.
2. not sure if it should be used as a slang, but i'll give an example

a Secret place in nj that blacks, jews, and hispanics hang out to get away from the world.

506 SQUAD refers to a small gang in east coast Canada. Named after it's origination area code(506), they are the kind of gang that cleans up thier hood from crack heads and drug pushers. Also called "The SQUAD" or simply "506". Their flag color is green. They welcome any new members and they have no true leader. rep if you wish.

The hottest spot to hang on Gannon's campus. Good music and good vibes