Columbia · Boone County
Drug Crime Lawyer in Columbia & Boone County
Most Boone County drug cases turn on a question that has nothing to do with the drugs: whether the search that found them was lawful. We defend drug charges in Columbia and across Boone County, in state court and in federal court.
The heart of most drug cases
How do you get a drug case dismissed in Boone County?
The Fourth Amendment protects you from unreasonable searches. If police found the evidence through an unlawful stop, an unlawful search of a car, apartment, or dorm room, or a defective warrant, that evidence may be suppressed, and a drug case can fall apart without it.
- The stop. Did the officer have a lawful reason to stop you, and did the stop last longer than it should have while waiting for a dog?
- Consent. Was a search truly voluntary, or was consent assumed or pressured? Consent to look in one place is not consent to search everything.
- The residence. Apartments, rental houses, and shared student housing raise hard questions about who could consent to a search and whose drugs they were.
- The warrant. Was it supported by real probable cause, and did the search stay within its limits?
- The lab. Was the substance properly identified and weighed, and is the chain of custody intact? Weight can decide whether a case is possession or trafficking.
Where your case is heard
Where will my Boone County drug case be heard?
Boone County Courthouse
State drug charges in Boone County are heard in the 13th Judicial Circuit at the Boone County Courthouse, 705 East Walnut Street in downtown Columbia.
Federal court in Jefferson City
Boone County is part of the Central Division of the U.S. District Court for the Western District of Missouri, which sits in Jefferson City. A Columbia case that draws federal charges is heard there, a few blocks from our office.
Drug cases are among the most likely to move from state to federal court. If your case has federal exposure, see our federal criminal defense page. For how federal drug sentences work, see federal drug conspiracy and mandatory minimums.
The range of charges
What are the penalties for drug charges in Missouri?
The charge depends on the substance, the amount, and what the State says you meant to do with it.
Possession
Possession of a controlled substance is a class D felony, up to 7 years. Marijuana is different: more than 10 grams up to 35 grams is a class A misdemeanor, and 10 grams or less is a class D misdemeanor, when state marijuana law does not apply.
Delivery and intent to distribute
Delivery, or possession with intent to deliver, is generally a class C felony, 3 to 10 years. Delivering near a school, school bus, public park, or public housing is a class A felony.
Trafficking
Trafficking is based on weight. For fentanyl, the threshold is tiny: more than 3 milligrams of a mixture containing it can support a trafficking charge, and 14 milligrams or more raises the class.
Manufacturing
Manufacturing or growing a controlled substance is generally a class C felony, and a class B felony within 2,000 feet of a school, college, or university.
Marijuana in 2026
Is marijuana legal in Columbia?
For adults 21 and older, possessing up to three ounces is legal under Article XIV of the Missouri Constitution. But the protection has limits, and many marijuana cases in a college town fall outside it.
Over the limit
Possessing more than three ounces but not more than six is a civil infraction with a fine for a first or second violation. Beyond that, and for any sale outside the licensed system, criminal law still applies.
Under 21
A person under 21 who possesses marijuana faces a civil penalty of up to $250, with the option of drug education or counseling instead of the fine.
Driving
Legal possession is not permission to drive impaired. Driving under the influence of marijuana is charged as DWI.
Federal law
Marijuana remains illegal under federal law, which matters for federal property, some jobs and licenses, and firearm purchases.
Alternatives
Does Boone County have a drug court?
Yes. The 13th Judicial Circuit runs an adult drug court: a voluntary program of court supervision, drug testing, and treatment, generally for residents of Boone or Callaway County who have a treatment need. For the right person, it can be an alternative to incarceration.
Whether a treatment court fits your case is a decision to make with a lawyer after the evidence has been reviewed, not in place of reviewing it.
Students
What if I am a student at Mizzou?
A drug charge can reach well beyond the courtroom for a student: university discipline, housing, scholarships, professional school and licensing applications, and, for international students, immigration status, where drug offenses carry some of the most serious consequences.
Those consequences need to be weighed before any plea. Parents often make the first call, and we are glad to talk, but the student is the client and the confidentiality is theirs.
Answers
Columbia drug charge questions we hear
Where will my Columbia drug case be heard?
State charges are heard in the 13th Judicial Circuit at the Boone County Courthouse, 705 East Walnut Street in Columbia. Federal charges from Boone County are heard in the Central Division of the Western District of Missouri in Jefferson City.
What is the penalty for possession of a controlled substance in Missouri?
Possession of a controlled substance is a class D felony, punishable by up to 7 years. Marijuana amounts not protected by Article XIV are lower-level offenses: more than 10 up to 35 grams is a class A misdemeanor, and 10 grams or less is a class D misdemeanor.
How much fentanyl is trafficking in Missouri?
More than 3 milligrams of a mixture or substance containing a detectable amount of fentanyl can support a trafficking charge, and 14 milligrams or more raises the offense class. Any amount of carfentanil can support a trafficking charge.
Can a drug possession conviction be expunged in Missouri?
Often. Missouri allows expungement of many drug convictions, and a 2026 law requires automatic expungement of qualifying possession and paraphernalia convictions once the waiting period passes, beginning no later than January 1, 2027. See our Missouri expungement page.
Do you represent University of Missouri students?
Yes. We represent students charged in Columbia and Boone County, and we consider the university, licensing, and immigration consequences alongside the criminal case.
Before you say anything to police, read three things people say that prove a drug case for the State. Already out on bond? Read how people end up back in jail on a Missouri drug charge. Charged with possession? See what a Missouri drug possession charge carries. Facing a larger amount? See Missouri drug trafficking charges.
A college student or young adult? See student and young adult defense in Columbia, including Columbia Municipal Court and the University of Missouri conduct process.
Facing a different charge in Boone County? See our Columbia criminal defense page or our Columbia DWI page. For Missouri drug law generally, see drug crime defense. Already convicted? See appeals and post-conviction in Boone County.
Talk to us
The search is the case. Let us look at it.
If you are facing a drug charge in Columbia or anywhere in Boone County, or you are under investigation and no charge has been filed yet, reach out.
Attorney advertising. The choice of a lawyer is an important decision and should not be based solely upon advertisements. The information on this page is general and is not legal advice. It reflects Missouri law as of September 2026. Contacting Vindex Law, PC does not create an attorney-client relationship.
© 2026 Vindex Law, PC · 235 East High Street, Suite 102, Jefferson City, MO 65101