People of African origins have been in Philadelphia for more than 300 years
Excerption from Global Philly: African
For over 300 years, Philadelphia has been home to people of African origin, from African slaves in the 17th and 18th centuries to waves of the “Great Migration” from the southern states in the late 19th and early 20th centuries. In recent years, Philadelphia has come full circle and is once again playing host to a new population arriving directly from the continent of Africa. There are an estimated 50,000 African immigrants living in the Greater Philadelphia area, representing a variety of nations, cultures, languages, and religions.
Link to the full article and thesource: http://globalphiladelphia.org/communities/african