There are 2 Post Offices in Pittsburg, California, serving a population of 69,449 people in an area of 18 square miles. There is 1 Post Office per 34,724 people, and 1 Post Office per 8 square miles.
In California, Pittsburg is ranked 1,039th of 1798 cities in Post Offices per capita, and 922nd of 1798 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Pittsburg Post Offices.
United States Postal Service 296 Atlantic Avenue Pittsburg, CA Mailing Service, Postal Services
United States Postal Service 835 Railroad Avenue Pittsburg, CA Mailing Service, Postal Services