Post Offices in Wildomar, California, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Wildomar Post Office No Reviews Favorite Fax: (951) 678-9561Phone: (951) 678-9610Retail Hours Wildomar Annex Post Office No Reviews Favorite Fax: (951) 678-9561Phone: (951) 678-9610Retail Hours