There are 119 Mailing Services in Contra Costa County, California, serving a population of 1,123,678 people in an area of 723 square miles. There is 1 Mailing Service per 9,442 people, and 1 Mailing Service per 6 square miles.
In California, Contra Costa County is ranked 40th of 58 counties in Mailing Services per capita, and 6th of 58 counties in Mailing Services per square mile.