A few persons have told me that they have received Social Security scam telephone calls from a 210 area code, which is located in the San Antonio, Texas. Please see the comments below if there is any below. If you have calls from area code 210, please share experiences with me by leaving a comment below. Area code 210 is a North American Numbering Plan overlay of telephone area codes 312 and 773 in Chicago, Illinois, and entered service on November 7, 2009.