About Gus
Gus Kostopoulos earned his J.D. from DePaul University in 1995. He took the classroom lessons into practice and went on to build a steady legal career in Illinois. His education at DePaul provided the foundation for work that spans decades.
Kostopoulos has been a lawyer at Kostopoulos Law Group since 2004. Records show he has worked through that firm for many years. He maintains professional memberships and remains active in legal circles in the state.
His career path is straightforward. After law school he entered private practice and over time settled into the firm that now bears his name. Colleagues describe a practitioner who handles the day-to-day demands of a busy law office. He oversees client matters, manages office operations and works directly with clients across multiple locations.
Kostopoulos’s practice has long been anchored in Illinois. He maintains offices in Chicago, Naperville and Oakbrook Terrace. Those locations allow him to meet clients across the region and to keep a local presence in both the urban and suburban parts of the state. He balances in-person consultations and file management across those offices.
Outside the office, he retains current professional memberships. He participates in activities common to private practitioners, including client intake, case preparation and courtroom appearances when required. His professional life reflects steady involvement in the practical work of law rather than a public-facing academic or political profile.
Documentation shows a career that is practical and operational. He has navigated the responsibilities typical of a long-standing practitioner: client relations, case strategy, and the administrative side of running a law practice. Those tasks form the backbone of his daily work.
He is based in Illinois and continues to practice through Kostopoulos Law Group. He currently represents clients from the Chicago, Naperville and Oakbrook Terrace offices.
