Groupon Customer Service Phone Numbers Customer service: 877-788-7858 Groupon Prime Support Number: 888-664-4482 Toll Free Groupon : (888) 582-4354 Groupon Headquarters Info, Email, Phone number, Website and live chat Information Groupon’s headquarters is located in Chicago, Illinois just east of the Chicago River North Branch near the corner of Chicago Avenue and North Larrabee Street. Groupon started a