Public Conduct in Jefferson County, MO (2026)
5 rules for unincorporated Jefferson County, Missouri.
Verified from official government sources
Public Urination
Jefferson County's peace disturbance ordinance names "urinating or defecating in public" as one specific act that constitutes the offense in the unincorporated area. Violators face prosecution in County Municipal Court under the general penalty of up to a $1,000 fine or a year in jail.
Public Urination Is a Peace Disturbance in Jefferson County
Some RestrictionsJefferson County, MO Code of Ordinances §205.110(A)(5), (B)
A. No person shall cause a peace disturbance in the unincorporated area of Jefferson County, Missouri. A person commits the offense of peace disturbance if he or she unreasonably and knowingly disturbs or alarms another person or persons by: ... 5. Urinating or defecating in public; or ... B. Violations of this Section shall be prosecuted in the Jefferson County Municipal Court by the Jefferson...
Skateboarding Rules
Jefferson County makes it unlawful for anyone on roller skates, roller blades, or a skateboard to go onto any road except to cross it. While crossing, the skater has all the rights and all the duties of a pedestrian, and violating the restriction is punishable by up to a $250 fine.
Jefferson County Bars Skateboards From County Roads
Heavy RestrictionsJefferson County, MO Code of Ordinances § 330.120
No person upon roller skates, roller blades or a skateboard shall go upon any road except while crossing the road. When so crossing, such person shall be granted all of the rights and shall be subject to all of the duties applicable to all other pedestrians.
Jaywalking
Jefferson County pedestrians may not cross between two intersections that have working traffic control signals unless they use a marked crosswalk. Outside signalized stretches, walkers must cross at right angles by the shortest path and must yield to vehicles unless already in a crosswalk.
Jefferson County's Mid-Block Crossing Ban Explained
Some RestrictionsJefferson County, MO Code of Ordinances § 335.060
Pedestrians shall not cross at any place between adjacent intersections at which traffic control signals are in operation, except when crossing in a marked crosswalk.
Public Marijuana Use
Jefferson County makes it unlawful to possess or control marijuana anywhere in the unincorporated county unless the possession is authorized under Missouri's controlled-substances statutes, RSMo Sections 195.005 to 195.425, which include the state's licensed medical and adult-use marijuana program.
Jefferson County Marijuana Possession Ban
Significant RestrictionsJefferson County, MO Code of Ordinances § 205.200(A)
Except as authorized by Sections 195.005 to 195.425, RSMo., it is unlawful for any person to possess or have under his or her control marijuana as defined in Section 195.010, RSMo., in the unincorporated area of Jefferson County, Missouri.
Public Alcohol Use
Jefferson County makes it unlawful to be intoxicated on a street, in a place of amusement, hotel, restaurant, public building, or other public place anywhere in the unincorporated county, a standalone offense separate from underage possession or DWI, prosecuted in county Municipal Court.
Jefferson County Bans Public Intoxication
Some RestrictionsJefferson County, MO Code of Ordinances § 205.190(A)
A person shall not be in a state of intoxication on any street, highway, thoroughfare, place of amusement, hotel, motel, restaurant, public building, or other public place in the unincorporated area of Jefferson County, Missouri.
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