Resident Population in Federal Reserve District 3: Philadelphia was 13854.45200 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Resident Population in Federal Reserve District 3: Philadelphia reached a record high of 13854.45200 in January of 2024 and a record low of 10502.07400 in January of 1970. Trading Economics provides the current actual value, an historical data chart and related indicators for Resident Population in Federal Reserve District 3: Philadelphia - last updated from the United States Federal Reserve on April of 2026.