Petersburg City, VA - Resident Population in Petersburg city, VA was 34.05800 Thous. of Persons in January of 2024, according to the United States Federal Reserve. Historically, Petersburg City, VA - Resident Population in Petersburg city, VA reached a record high of 46.30000 in January of 1975 and a record low of 30.57300 in January of 2018. Trading Economics provides the current actual value, an historical data chart and related indicators for Petersburg City, VA - Resident Population in Petersburg city, VA - last updated from the United States Federal Reserve on April of 2026.