Phi Sigma Sigma is primarily a northeastern sorority:
New York: 21 chapters
New Jersey: 9
Penn: 17
Mass: 5
Maryland: 4 (I DO NOT consider myself a southerner!!!...but no hatin on those who do

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This is just a handful. My friends that go to school in the south thought Phi Sig was local because we have no chapters at the traditionally "southern greek schools" but when I go visit my boyfriend in jersey I see Phi Sigs everywhere