New Philadelphia is near Barry in Pike County, western Illinois, not Philadelphia, Pennsylvania. The National Park Service identifies it as the first United States town platted and registered by an African American. That carefully bounded claim concerns a recorded town plan; it does not mean Black people had never founded communities before 1836.
The distinction matters when comparing Black towns. New Philadelphia developed before the Civil War and included Black and white households. It should not be described as an all-Black Reconstruction settlement or treated as interchangeable with Nicodemus, Kansas. Different founding dates, legal conditions and populations produced different kinds of opportunity.
Today the visible landscape demands interpretation. An open field is not an empty history. Street alignments, lot maps, documents and excavated household material can be read together to recover a place whose original nineteenth-century buildings no longer stand. A modern interpretive structure or digital reconstruction is an aid to understanding, not surviving proof of how every home looked.