Kylee R. Mattoon - St. Louis, MO
Attorney at Grant, Miller & Smith, LLC
Family Law Lawyers in St. Louis, MO
7733 Forsyth Blvd. Suite 1850 St. Louis, MO 63105
St. Louis Family Law Lawyer
Updated: 03/10/2026
Areas of Practice
- Family Law
- Juvenile Law
- Criminal Defense
Attorney Information
Overview
Kylee R. Mattoon is a cum laude graduate of Washington University School of Law. Kylee was a Chief Executive Editor of the Washington University Journal of Law & Policy and participated in the school’s Children’s Rights Clinic, assisting low-income families with adoptions and legal guardianships and representing the best interests of children in child custody and order of protection proceedings. Kylee earned her bachelor’s degree in Human Development & Family Studies from the University of Missouri, graduating summa cum laude. She is a member of the Missouri State Bar, the American Bar Association, and the Bar Association of Metropolitan St. Louis. She is on the Board of Directors for the Missouri Chapter of the Association of Family and Conciliation Courts (MO-AFCC).
Prior to joining Grant, Miller & Smith, Kylee served as a legal intern for the St. Louis City Circuit Attorney’s Office. She was also one of 30 law students nationwide selected for the Equal Justice Works Crime Victims Justice Corps, interning with Legal Aid of Western Missouri in their Human Trafficking Unit.
Before beginning her legal career, Kylee worked with children and families impacted by family violence.
Education
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Legal Education
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Washington University School of Law,
St. Louis,
Missouri
Honors: cum laude
Honors: Scholar in Law Award
Honors: Dean’s Service Award
Honors: Dean's List
Honors: Two (2) CALI Excellence for the Future Awards
Honors: Public Interest Certificate
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Washington University School of Law,
St. Louis,
Missouri
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Non Legal Education
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University of Missouri
Honors: summa cum laude
Honors: Dean's List
Honors: Multicultural Certificate
Major: Human Development & Family Studies
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University of Missouri
Current Employment Position(s)
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Attorney
Published Works
Articles
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Kylee R. Mattoon & Henry M. Miller, Third-Party Custody: A Path to Custody and Visitation for Non-Parent Caregivers, 67(2) , St. Louis Bar Journal, 13, 2021
Bar Admissions
- Missouri
Other Affiliations
- Missouri Chapter of the Association of Family and Conciliation Courts (MO-AFCC), July 28, 2023 - Present (Board of Directors)
Fraternities and Sororities
- Kappa Delta
Reviews
Customer Reviews for Kylee R. Mattoon
Highlights
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3.5 Value
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3.5 Quality of Service
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3.5 Professional Competence
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Verified ClientConsulted Attorney 2025Ms Kylee Mattoon was professional, helpful, and stepped up to the plate. During my name change hearing I was hoping to get a gender marker switched as well and she spoke up and represented me with the legalities I was missing to get that done. And now i get to live my life under my name and gender thanks to her.
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Hired Attorney 2022-2023Kylee has overpromised by a margin on what's available to me in our initial conversations. Then as the case progressed she failed to follow thru on her initial claims of what I could pursue. At the end I was forced to settle and ended up conceding considerably. Having been berated by her in front of the opposing counsel and many others on more than one occasion was also another unacceptable conduct.
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Hired Attorney 2021Kylee Mattoon did an excellent job with my legal matter. I was nervous and embarrassed and her reassuring nature helped ease the discomfort. In addition she was very thorough and represented me very well in the hearing. With her help and hard work it went in my favor. Your firm is lucky to have her in Family Law.
Photo
Contact
7733 Forsyth Blvd.
Suite 1850
St. Louis, MO 63105
Phone: 314-492-8878
Fax: 314-721-1710
Email: Send a message
Website: https://www.mgmlawfirm.com/
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