Post office in Oro Grande Near Me Find Post office in Oro Grande near me. United States Postal Service Establishment Finance Post office 15155 Olive Street, Oro Grande, CA 92368 +1 800-275-8777 CALIFORNIA-PAGES.COM Oro Grande Post office Categories of companies in Oro Grande, California All categories Bus station Cemetery Church Establishment Finance Food General contractor Home goods store Moving company Museum Place of worship Post office Roofing contractor School Transit station