Social Security
The Social Security Administration provides information regarding Social Security card name changes. Phone 1.800.772.1213
Greeley Social Security Office
5400 West 11th Street
Greeley, CO 80634
970.353.2192
970.353.2192 (TTY)
http://www.socialsecurity.gov
Drivers License
The Colorado Department of Revenue provides name change requirements for Drivers License.