These guys have your number. Or at least you better hope they do. The Social Security Administration (SSA) pays retirement, disability, and survivors benefits to workers and their families. The SSA also issues Social Security numbers and administers the Supplemental Security Income (SSI) Program from more than 1,400 offices around the country, including its regional headquarters in Atlanta, Boston, Chicago, Dallas, Denver, Kansas City, New York, Philadelphia, San Francisco, and Seattle. The SSA operates primarily with an annual federal budget of about $12 billion and some $66 billion in contributions from workers. President Franklin D. Roosevelt created Social Security and the administration in 1935.