Post office in Potrero Near Me Find Post office in Potrero near me. United States Postal Service Establishment Finance Post office 25050 California 94, Potrero, CA 91963 +1 800-275-8777 CALIFORNIA-PAGES.COM Potrero Post office Categories of companies in Potrero, California All categories Airport Campground Cemetery Establishment Finance Fire station Food Lodging Park Post office Real estate agency Rv park School Supermarket Travel agency