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State's Attorney

Terry A. Costello
200 East Knox Street
Morrison, IL 61270

Morrison Office
Phone: (815) 772-5194
Fax: (815) 772-4299

Sterling Office
Phone: (815) 535-4540

E-MailThis email address is being protected from spambots. You need JavaScript enabled to view it.

The State’s Attorney has various duties and powers, including:

  • To commence and prosecute all traffic, misdemeanor, felony, and conservation offenses, all juvenile matters in Whiteside County, tax proceedings, and asset forfeitures;
  • To provide legal advice to the Sheriff, Circuit Clerk, Treasurer, Recorder, Coroner, County Clerk, Regional Superintendent of Schools, Assessor, Highway and Health Departments, and other county agencies;
  • To provide legal advice and representation to the County Board;
  • To seek justice for victims of crimes; and
  • To provide advice and training to all local law enforcement agencies.

There are State’s Attorney’s Offices in both the Morrison and Sterling courthouses.  Experienced attorneys and staff work with me in each office.

"It is my honor and privilege to serve as Whiteside County States Attorney." 

Terry A. Costello

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