Clarendon Hills had 14 actively practicing lawyers as of May
According to the ABA's 2025 National Lawyer Population Survey, Illinois had one of the highest concentrations of lawyers in the United States, with 61,945 resident active attorneys statewide.
That total places Illinois among a small group of states accounting for a significant share of the nation's legal workforce, reflecting its importance within the broader U.S. legal system.
As of June 2026, average lawyer salaries in Illinois ranged from $101,987 for an entry-level attorney handling routine legal work to $258,374 for highly experienced attorneys managing complex cases with significant autonomy. Mid-level attorneys, such as those in Attorney III roles—who handle highly complex legal work with moderate supervision—earned on average $191,228 in Illinois, compared to $187,607 nationwide.
Data refers to all lawyers who were actively practicing during this time period.
| Lawyer Name | Name of Firm | License Grant Date |
|---|---|---|
| Cassin, Stephen Joseph | 03/07/1985 | |
| DeAngelis, Ralph William | Law Office of Ralph DeAngelis | 06/11/1986 |
| Gill, Matthias David | The Gill Law Firm, PC | 04/11/2004 |
| Green, John Michael | Green Law Offices, LLC | 05/11/1992 |
| Harenza, Katherine Louise | 05/11/1998 | |
| Martella, Steven F. | 07/11/1991 | |
| McDonald, Arleesia L. | Compass Holding, LLC and its subsidiaries | 09/11/2006 |
| McLinn, Jo-An Rochene | Law Offices of Jo-An Rochene McLinn, P.C. | 09/11/2006 |
| Ognibene, Eugene Charles II | Gene Ognibene Associates | 10/11/1994 |
| Proczko, Taras R. | 29/10/1980 | |
| Reidy, Elizabeth Jane | 07/11/1985 | |
| Scavo, James Michael | Law Office of James M. Scavo | 23/12/1985 |
| Schlatter, Kathy Annette | Kathy A. Schlatter, Esq. | 08/11/2007 |
| Singletary, Kathleen Hastedt | Kathleen Singletary Esq., Attorney At Law | 06/11/1997 |