Elite Lawyer
Donald J. Cosley - Arlington Heights, IL - Elite Lawyer
Elite Lawyer Since 2018

Donald J. Cosley

Arlington Heights Family Law and Criminal Defense Lawyer

Practice Areas

Criminal Defense, Domestic Violence, DUI / DWI, Felony DUI, Expungement, Traffic Ticket, Divorce & Family Law, Child Custody, Child Support, Property Division, Orders of Protection

Main Office

Cosley Law Office
3030 Salt Creek Drive, Suite 120
Arlington Heights, IL 60004
Phone: 847-253-3100
Fax: 847-253-3434

About Donald J. Cosley

Donald J. Cosley has been representing Illinois residents in criminal defense and family law cases for over 20 years. He has a wealth of courtroom experience and an undying commitment to providing quality client service. He personally handles all aspects of his cases. Extensive experience and responsive customer service are the hallmarks of the Law Offices of Donald J. Cosley.

Attorney Cosley was admitted to practice in Illinois and the Northern District Court of Illinois in 1994, and before the United States Supreme Court in 2001.

He has also served as Chairperson for the Attorney Referral Service, Judges Night & Holiday Party, and as a coach or judge of mock trial from 2005 to 2008.


DePauw University, Greencastle, IN, B.A.-1991
John Marshall Law School, J.D.-1994

Bar Associations

Illinois State Bar Associations
Northwest Suburban Bar Association

Honors & Awards

Buffalo Grove High School Distinguished Alumni Award, 2005- Present
Hersey High School Award, 2019- Present
High School District 214 Distinguished Service Award, 2020- Present
Northwest Suburban Bar Association Community Service Award, 2020- Present

Professional Associations

U.S. District Court Northern District of Illinois, 1994

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Offices / Locations

Cosley Law Office

3030 Salt Creek Drive, Suite 120
Arlington Heights, IL 60004
Phone: 847-253-3100
Fax: 847-253-3434

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