Clarendon Hills: No change in number of lawyers with active licenses in May 2026
Overall, the city had a total of 14 lawyers with active licenses in 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 |
|---|---|---|
| Stephen Joseph Cassin | 07/03/1985 | |
| Ralph William Deangelis | Law Office of Ralph DeAngelis | 11/06/1986 |
| Matthias David Gill | The Gill Law Firm, PC | 11/04/2004 |
| John Michael Green | Green Law Offices, LLC | 11/05/1992 |
| Katherine Louise Harenza | 11/05/1998 | |
| Steven F. Martella | 11/07/1991 | |
| Arleesia L. McDonald | Compass Holding, LLC and its subsidiaries | 11/09/2006 |
| Jo-An Rochene McLinn | Law Offices of Jo-An Rochene McLinn, P.C. | 11/09/2006 |
| Eugene Charles Ognibene II | Gene Ognibene Associates | 11/10/1994 |
| Taras R. Proczko | 10/29/1980 | |
| Elizabeth Jane Reidy | 11/07/1985 | |
| James Michael Scavo | Law Office of James M. Scavo | 12/23/1985 |
| Kathy Annette Schlatter | Kathy A. Schlatter, Esq. | 11/08/2007 |
| Kathleen Hastedt Singletary | Kathleen Singletary Esq., Attorney At Law | 11/06/1997 |