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Northeast States of U.S; Maine, Vermont, New Hampshire, Conneticut, Rhode Island, Massachusetts, New York, New Jersey, Pennsylvania, Delaware, and Maryland. Some Major cities are; New York City, Philly, Boston, Newark, D.C and Baltimore.
Kid: I rep the Clean North, NY where you at?!??!

Kid 2: I reside in the Dirty South, ATL ya Feel Meh!??!
by Jersey Kid November 02, 2007
As opposed to the southern states being the "Dirty South" the northern states are the Clean North.
Ex. 1 "We be representin the Clean North Nigga."

Ex. 2 "Mr. X "You from the Clean North?"
"Mr. Y "True Dat."
by BA-ling March 06, 2003