Post Offices in Las Cruces, New Mexico, United States SearchSearch SearchSearch View: Grid 1View: Grid 2View: Grid 3View: Grid 4View: Grid 5View: List Commerce Post Office No Reviews Favorite Fax: (575) 521-4621Phone: (575) 521-4953Retail Hours Las Cruces Post Office No Reviews Favorite Fax: (575) 525-2411Phone: (575) 524-2903Retail Hours University Park Post Office No Reviews Favorite Phone: (575) 646-2019Retail Hours