Township Officials

In addition to the offices of Township Clerk and Assessor, the township board is comprised of four trustees and the township supervisor. Monthly board meetings take place on the first Monday and third Wednesday of each month and the public is welcome to attend.

Each person below has been elected to their respective positions and stand ready to serve constituents in Proviso Township.

Michael A. Corrigan, Township Supervisor

Email Supervisor Corrigan

LaGrange Park resident; married, raising six children
Proviso Township Assessor, 1997-2009
President/Owner, Corrigan Financial Services
Member, Township Officials of Cook County
Former Trustee and Treasurer, LaGrange Park Public Library
Member, West Suburban Chamber of Commerce
Member, LaGrange Kiwanis Club
Past President, Young Board of Advisors for Mercy Hospital
Coach, Youth Football, Soccer, and Baseball


Anthony "Tony" Williams, Township Clerk


Melrose Park resident; married with two daughters
Owner, State Farm Insurance Agency
Member, Township Officials of Cook County
Current Board member for West Suburban Hospital and Westlake Hospital
Member, North Avenue Business Association Chamber of Commerce
Past President, Maywood Condo Association
Past Trustee, Proviso Township

Steven J. Zawaski, Township Assessor

Email Assessor Zawaski

Western Springs resident; married, two adult daughters
U.S. Marine Corps., 1969-1971
President, Zawaski and Zawaski Real Estate Appraisers
Member, The Fellowship Club
Recipient, 2002 Mr. Fellowship Award for work on behalf of women shelters
Recipient, 3 distinguished Appraisal Institute service awards
Member, Appraisal Institute
Former Coach, Youth Baseball
Evelyn Chavez, Township Trustee


Mari Herrell, Township Trustee


Bellwood Resident; two adult children
Recipient, numerous commendations for volunteer work with seniors and children
Executive Director, Memorial Park District
Former Member, Advisory Committee, Proviso Community Mobilization Summit on Violence
Former Member, Bellwood Kiwanis
Former Board of Directors Member, Bellwood United Way
Former Soccer Coach and Referee, Memorial Park District
Past President, Jefferson School P.T.A.
Member, Bellwood First Party
Joseph Christopher, Township Trustee



Westchester resident
2 children
Commissioner, Westchester Park District
Past Chairman, Planning & Zoning Commission - Village of Westchester
President, St. Joseph High School Booster Club
Former member - Westchester Parent Teacher Organization
Coach, Westchester Girls' Softball
Clarence E. Thomas, Township Trustee