There are 2 Post Offices in Duncannon, Pennsylvania, serving a population of 1,471 people in an area of 1 square miles. There is 1 Post Office per 735 people, and 1 Post Office per square mile.
In Pennsylvania, Duncannon is ranked 896th of 2580 cities in Post Offices per capita, and 602nd of 2580 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Duncannon Post Offices.
US Post Office 203 North Market Street Duncannon, PA
United States Postal Service 203 North Market Street Duncannon, PA Mailbox Rental, Postal Services