Jeffrey W. Ernst

Criminal Defense & Trial Attorney

Before his previous practice, Jeffrey Ernst was a criminal prosecutor for 11 years in the City of St. Louis, where he represented the State of Missouri in 100+ jury trials. As a prosecutor, Jeffrey prosecuted a wide range of criminal activity, including driving while intoxicated (DWI), murder, robbery, sexual misconduct, armed criminal action, weapons offense, and drug crimes. Jeffrey knows first-hand what is at stake when the government levels charges against a citizen. Today, Jeffrey uses his vast experience as a prosecutor to zealously defend those facing criminal prosecution. ​

Jeffrey’s experience ensures that his clients, whether seeking a plea deal or to be vindicated at trial, will receive the attention, preparedness, and thought their defense requires. Having been a supervisor in the prosecutor’s office, Jeffrey fully appreciates the common mistakes made by the government in prosecuting cases, which can be key to a client’s defense.

Having been involved in literally thousands of criminal cases, Jeffrey has a keen understanding of how to represent the individual needs of his clients and to reach a fair result.

Jeffrey was awarded Circuit Attorney Trial Stars in 2009, 2010, and 2011, the Excellence in Prosecution Award in 2009, and the Circuit Attorney Justice Award in 2009, 2010, 2011, 2012 and 2013. He was also named a Missouri Lawyer’s Weekly “Up & Coming” lawyer in 2012.

Jeffrey was born and raised in St. Louis, graduating from MICDS in 1997. He earned his law degree from St. Mary’s University School of Law. He resides in Town & Country with his wife and two sons. When not practicing law, Jeffrey is an avid golfer and history buff.