There are 3 Post Offices in Costa Mesa, California, serving a population of 112,930 people in an area of 16 square miles. There is 1 Post Office per 37,643 people, and 1 Post Office per 5 square miles.
In California, Costa Mesa is ranked 1,054th of 1798 cities in Post Offices per capita, and 774th of 1798 cities in Post Offices per square mile.
Find addresses, phone numbers, fax numbers, hours & services for Costa Mesa Post Offices.
US Post Office 2200 Harbor Boulevard Suite O Costa Mesa, CA Mailing Service, Postal Services
United States Postal Service 2230 Fairview Road Suite C Costa Mesa, CA Mailing Service, Postal Services
United States Postal Service 1590 Adams Avenue Costa Mesa, CA Mailing Service, Postal Services