Thank You for Voting Us The Top Workplace for Whiteside County Senior Center SM-ST2223516 Seniors! 1207 West 9th Street, Sterling United (815) 622-9230 whitesidecountyilseniorcenter Way Thank You for Voting Us The Top Workplace for Whiteside County Senior Center SM - ST2223516 Seniors ! 1207 West 9th Street , Sterling United ( 815 ) 622-9230 whitesidecountyilseniorcenter Way