2301 W. 22nd St., Oak Brook, IL 60523
866-964-7344
230 N. Mannheim Rd., Hillside, IL 60162
866-964-6290
Hours: Monday, Tuesday, Thursday and Friday, 9 a.m. – 3 p.m.; Wednesday, 9 a.m. – 12 noon
To register for benefits or to obtain information, call the Social Security Administration at 1-800-772-1213.