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1.
563
A street gang established in Lynbrook NY. Mostly Caucasian and Hispanic males. They "Jump Each other in" Following a blood in blood out rule" They ravage the streets of lynbrook, and surrounding towns breaking things,, starting fights, and harassing/assaulting innocent people. They are very dangerous and they are a big problem in the town of Lynbrook Long Island.
"563 Member- Yoo Yoo 563 563 all day pussys!
"Blood From Hempstead- Yo White Boy drop and roll nigga this is a stick up!
by KingtoneElhephasimone September 01, 2010
 
2.
563
area code for the hood...otherwise known as Wilton Iowa
YO! You know the Poop Phantom rolls in the 563?!?
by Jered W January 22, 2008