There are 2 Post Offices in Diamond Bar, California, serving a population of 56,600 people in an area of 15 square miles. There is 1 Post Office per 28,300 people, and 1 Post Office per 7 square miles.
In California, Diamond Bar is ranked 1,000th of 1798 cities in Post Offices per capita, and 887th of 1798 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Diamond Bar Post Offices.
US Post Office 23545 Palomino Drive Suite A Diamond Bar, CA Mailing Service, Postal Services
United States Postal Service 1317 South Diamond Bar Boulevard Diamond Bar, CA Mailing Service, Postal Services