According to our records, this business is located at 2054 Treat Blvd. in Walnut Creek (in Contra Costa County), California 94598, the location GPS coordinates are: 37.9297693 (latitude), -122.0401465 (longitude). Una Mas is categorized under Drive-In Restaurants (SIC code 5812). Known organization owner is Michael Dusfy. Current estimates show that the unit has a sales volume of $120,000 and staff of approximately 3 people. You can contact the company by phone at (925) 933-9500.