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also known as Lonergan Law Group, Ltd.
My name is John P. Lonergan. I am a former prosecutor who has been practicing law since 1992. I devote my practice to the handling of criminal and family law matters. Licensed in Missouri, Texas, and Illinois, I have extensive experience in protecting the rights of the accused. I recognize that people require aggressive representation. I also recognize that many attorneys fail to stay in regular communication with their clients. It is my goal, in each and every case I handle, to ensure that your rights are fully protected and that you are always up to date as to the status of your case.
I will promptly return your phone calls, quickly respond to emails, and will make myself available to answer your questions. I regularly provide clients with my cell phone number so I may be reached directly.
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$0 first 60 minutes
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Chat withState: Texas
Acquired: 2011
No misconduct found
State: Illinois
Acquired: 1993
No misconduct found
State: Missouri
Acquired: 1992
No misconduct found
4541 N. Prospect Road, Suite 102, Peoria, IL, 61616
54 Client Reviews
Showing 1 - 5 of 8 reviews | Cost of Services
Posted by Yvonnee | December 16, 2025 | Hired Attorney | Criminal Defense
Worked a Miracle on short notice
Atty Lonergan and his staff were nothing short of amazing during one of the most stressful, confusing, and scary times of my life. I called for a consult with a case that was extremely time sensitive and I had very little hope that it could be resolved or that anyone would be able to help me after I...
Posted by anonymous | March 09, 2023 | Hired Attorney
Great, honest, lawyer
Hired John for a few different cases and he was amazing. He is a great lawyer and his fees are very reasonable.
Posted by anonymous | May 02, 2021 | Hired Attorney | Federal Crime
Hands Down Best Attorney
I would like to share with anybody that is in need of an attorney at law my experience. A loved one of mine got a federal charge that carries a sentence guideline of 11 to 15 years. I called around looking for help, the first 3 attorneys I called sounded like salesman and they all wanted a lot of mon...
Posted by Nandi | March 31, 2021 | Hired Attorney | Litigation
Tenacious Litigator
Even with multiple postponements due to COVID-19 requiring additional court appearances my fee stayed the same. Mr. Lonergan successfully litigated my case through trial. His fees are reasonable and his professionalism top notch.
Posted by Jade | March 30, 2021 | Hired Attorney | Speeding & Traffic Ticket
Speeding 26-35 MPH / Speeding in construction zone
In 2016 I was cited for speeding over 26MPH which is a misdemeanor in Illinois. On top of that I was speeding in a construction zone. Three days after receiving this ticket I moved to Las Vegas, Nevada to attend college. With all the craziness of the move I missed my court date. Fast forward to 2021 ...
"John is always professional and competent. I have worked with John on a few matters as well as had an opportunity to observe him in various other matters. He always zealously represents his clients while maintaining a good working relationship with the prosecutors."
"I have known John Lonergan for 12 years. Not only is he an outstanding criminal defense attorney, he is a great family law attorney as well. I know that anyone who chooses John as their attorney is in excellent hands. I would recommend John to anyone for their criminal defense or family law needs."
"I worked as an Assistant State's Attorney for years, working on the other side of cases against John. I was always impressed how he was able to work with a prosecutor without ruffling feathers. He was able to speak with a prosecutor about the case, focusing on the case, the issues the case presented, and each particular defendant. It is a pleasure to endorse John Lonergan."
"I have known John Lonergan for more than 15 years. He provides great legal representation for a moderate price."
"I have known John for over nine years. I emphatically recommend his services and would not hesitate to recommend him to friends and family in need of representation in criminal and family law matters. Not only does he possess more than sound legal abilities, but what really sets John apart is how much he cares about his clients and wanting to achieve a good outcome for them. I have personally witnessed him going above and beyond for clients, often without them realizing."
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2018
Peer Review Rated, Martindale-Hubbell
1997 - Present
Owner, John Lonergan Law, Ltd.
1993 - 1997
Assistant States Attorney, Peoria County State's Attorney's Office
1993 - Present
Illinois State Bar AssociationMember
No jail, TASC Probation-client will be able to expunge his conviction and criminal record in a few years.
1992
JD - Juris Doctor
1989
BA - Bachelor of Arts
English
Legal Answers
Arrested for DUI in dupage county and 2 months latter awaiting trial was arrested for DWI . what it the most likely sentence
13 Dec 2013
I had a felony conviction from 1990 pardoned by the governor then expunged by a judge. Can I obtain an Illinois FOID card?
11 Dec 2013
I was not indicted but I received a proffer letter. Does that mean the US Attorney's office is contemplating granting immunity?
10 Dec 2013