Party affiliation: Democrat
James Paul Costello, American lawyer. Bar: Illinois 1978, United States District Court (northern district) Illinois 1978; admited, United States Court Appeals (7th circuit), 1989. Member Association of Trial Lawyers of America, Illinois Bar Association, Illinois Trial Lawyers Association (amicus curiae committee since 1981), Chicago Bar Association (judicial evaluation committee).
- Associate J. Thomas Demos & Associates, Chicago, 1978—1983. Partner Costello, McMahon, Burke & Murphy Ltd. (formerly James Paul Costello Ltd.), since 1983.
Denomination: Roman Catholic