Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Riley Nels Oncken, Practice Areas Family Law Attorneys. is located in the city of Sycamore, the state of Illinois. Attorney legal address Law Office of Riley N. Oncken119 N. Maple St.Sycamore, IL, 60178. For more information, please call (815) 991-2098 Your comments* (not for publishing) * — Required information Riley Nels Oncken ← View details Law Office of Riley N. Oncken119 N. Maple St.Sycamore, IL, 60178, Sycamore, Illinois (815) 991-2098