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Sign Regulations in Missouri (2026)

73 rules on the books across Missouri, 18 cities and counties. Select a rule to read the full details.

Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions

Political Signs

Rules for posting political campaign signs on your property, including size limits, how early you can put them up, and when they must come down.

Missouri: statewide

StatewideFew Restrictions

Missouri RSMo 442.404 prohibits homeowners' associations and deed restrictions from banning the display of political…

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St Peters

Significant Restrictions

In the City of St. Peters, Missouri, Section 405.750(E) bars anyone but the City itself, St. Charles County or the…

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Blue Springs

Some Restrictions

In the City of Blue Springs, Missouri, political and other First Amendment message signs on residential lots are exempt…

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Columbia

Some Restrictions

Columbia, Missouri bars anyone but a public officer from fastening election campaign posters to curbstones, lampposts…

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Kansas City

Some Restrictions

Kansas City lets any residential lot display extra noncommercial signs, capped at 8 square feet and 4 feet tall, from…

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Springfield

Some Restrictions

Political signs in Springfield, Missouri top out at 6 square feet on residential lots and 34 square feet on business…

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St Charles County

Some Restrictions

Political yard signs in unincorporated St. Charles County need no permit but are capped by size. Code § 405.480(C)(6)…

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St. Louis County

Some Restrictions

Political campaign and ballot issue signs on private property in unincorporated St. Louis County need no sign permit…

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Waynesville

Some Restrictions

Waynesville caps political signs in residential areas at 32 square feet each under § 510.070, allows them only on…

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Cass County

Light Restrictions

Cass County caps political campaign signs at thirty-two square feet under Section 400.780(A)(9), and timing follows the…

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Independence

Light Restrictions

Independence allows residents to post opinion signs on political and public-interest matters without a permit, but…

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Jefferson County

Light Restrictions

Jefferson County allows political signs without a permit if they stay at or under thirty-two square feet, or ninety-six…

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Lees Summit

Few Restrictions

Lee's Summit allows political and other noncommercial signs on private property with no permit. Under the Unified…

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Garage Sale Signs

Where you can place signs advertising a garage or yard sale, including restrictions on utility poles, medians, and public right-of-way.

St. Louis County

Heavy Restrictions

Garage and yard sale signs are prohibited in the public right-of-way under SLCRO §1003.168 and §710.010. Signs may only…

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Columbia

Some Restrictions

Columbia, Missouri allows one garage sale sign for each street that abuts the premises, no larger than 4 square feet…

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Independence

Some Restrictions

Garage-sale signs are barred from streets, public property, and utility poles in Independence, and must come down by…

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Kirkwood

Some Restrictions

Kirkwood limits garage, estate, moving and yard sales to four off-site directional signs no larger than two feet by…

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Lees Summit

Some Restrictions

Garage sale signs in Lee's Summit need no sign permit, but they're not unregulated: the Unified Development Ordinance…

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Springfield

Some Restrictions

A Springfield yard-sale sign is capped at 4 square feet, must be non-illuminated, and may stay up only two consecutive…

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St Charles County

Some Restrictions

St. Charles County limits garage sale signs to one 4-square-foot sign per residence, posted no more than a day early…

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Cass County

Light Restrictions

In unincorporated Cass County, a garage sale sign is exempt from the Zoning Order's sign permit and size rules under…

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Florissant

Light Restrictions

Florissant allows one on-site garage sale sign plus up to two directional signs, each capped at 6 square feet, but only…

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Jackson County

Light Restrictions

Unincorporated Jackson County lets you post temporary off-premise garage-sale signs without a permit, capped at 90 days…

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Jefferson County

Light Restrictions

Jefferson County lets residents post yard and garage sale signs without a permit, but caps them at twelve square feet…

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St Peters

Light Restrictions

In the City of St. Peters, Missouri, Section 405.750(O) lets residents post a garage or yard sale sign only with the…

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Digital Billboards

Rules governing digital and electronic billboards, including size limits, brightness and dwell-time standards, and the ongoing legal fight in cities like LA.

Boone County

Heavy Restrictions

Boone County allows billboards only in General Commercial, Light Industrial and General Industrial districts near U.S…

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Columbia

Heavy Restrictions

Columbia, Missouri prohibits any electronic, digital, tri-vision, or other changeable-copy display on billboards…

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Jackson County

Heavy Restrictions

Off-premise billboards in unincorporated Jackson County cannot use moving, flashing, or pulsating lighting, which bars…

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St. Louis

Heavy Restrictions

New LED and digital billboards near interstate and primary highways are banned in St. Louis; only devices permitted…

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Blue Springs

Significant Restrictions

In the City of Blue Springs, Missouri, a digital billboard needs the same Chapter 400 and state highway approval as a…

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Cass County

Significant Restrictions

Cass County caps electronic message and LED signs with moving or variable light at twelve square feet per face under…

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Jefferson County

Significant Restrictions

Jefferson County bars flashing, blinking or animated signage countywide but carves out programmable electronic message…

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Kansas City

Significant Restrictions

Kansas City bans new electronic or digital changeable-copy displays on outdoor advertising signs outright. Only…

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Kirkwood

Significant Restrictions

Kirkwood bans electronic message centers in the Downtown Historic District and, everywhere else, caps their brightness…

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Lees Summit

Significant Restrictions

Digital billboards in Lee's Summit need a special use permit and can only go up in the B-P, PI-1 and PI-2 districts…

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St Charles County

Significant Restrictions

Electronic off-premise billboards are legal only on designated highways and must hold static images for at least 10…

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St. Louis County

Significant Restrictions

St. Louis County has no separate digital-billboard category: LED and static advertising signs share the same…

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Florissant

Some Restrictions

Digital signs are flatly banned in Florissant's Historic District but permitted elsewhere in the city under Section…

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Independence

Some Restrictions

Independence requires digital billboard displays to hold each scene for at least eight seconds and lets the Community…

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O Fallon

Some Restrictions

O'Fallon allows digital billboards along its regulated highway corridor, but Section 410.170(B)(5) bans flashing…

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Springfield

Some Restrictions

Springfield caps electronic message center sign brightness at 0.3 foot-candles above ambient light, requires automatic…

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St Peters

Some Restrictions

In the City of St. Peters, Missouri, Section 405.765(D)(1)(a) requires each electronic billboard image to hold for at…

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Window Signs

Limits on the percentage of window area that may be covered by signs in storefronts, including transparency rules for safety visibility into businesses.

Lees Summit

Heavy Restrictions

Lee's Summit bans exterior window signs outright: the Unified Development Ordinance lists "window sign, exterior" among…

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Springfield

Significant Restrictions

Springfield sets no coverage cap on signage displayed inside a window, but signs applied to the exterior glass are…

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Blue Springs

Some Restrictions

In the City of Blue Springs, Missouri, signs applied to a window or door escape the Sign Code's standard permitting…

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Florissant

Some Restrictions

Florissant caps window signage at convenience businesses and package liquor stores: no more than 10% of the window may…

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Jackson County

Some Restrictions

In unincorporated Jackson County, posters or announcements in a window count against your site's sign allowance only if…

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Jefferson County

Some Restrictions

Jefferson County caps window signage under its zoning code: permanent signs may cover no more than 15% of a building…

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Kirkwood

Some Restrictions

Kirkwood caps window signage at 33% of any single window's area and bans illumination of window signs outright…

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St Charles County

Some Restrictions

St. Charles County caps on-premise window, sidewalk and business sale signs and banners at 32 square feet in Commercial…

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St Peters

Some Restrictions

In the City of St. Peters, Missouri, permanent window signs advertising goods or services sold on the premises may…

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St. Louis

Some Restrictions

St. Louis treats window signs as a standard permitted sign type, not a separately capped category, so they count toward…

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Columbia

Light Restrictions

Columbia, Missouri doesn't count an ordinary sign placed inside a display case or show window as a regulated 'sign' at…

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O Fallon

Light Restrictions

O'Fallon lets businesses put signs in their windows without a permit, but Section 410.120(A)(14) caps them at twenty…

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Waynesville

Light Restrictions

In Waynesville's commercial and industrial areas, § 510.080 caps window signs at 40% of the total window or door area…

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Freeway-Facing Signs

Restrictions on commercial signs visible from freeways, including height, illumination, and outdoor advertising act compliance.

Blue Springs

Significant Restrictions

In the City of Blue Springs, Missouri, a freeway billboard must sit on private property contiguous to I-70's…

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Cass County

Significant Restrictions

Along state-maintained highways in unincorporated Cass County, a billboard may only stand within 660 feet of the…

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Columbia

Significant Restrictions

Columbia, Missouri only allows billboards near Interstate 70 or U.S. 63 within sixty feet of the right-of-way in…

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Florissant

Significant Restrictions

Billboards aimed at highway traffic in Florissant are capped at 30 feet above the highway's natural grade (50 feet…

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Independence

Significant Restrictions

Off-premise billboards facing Independence's divided highways can run up to 750 square feet, while signs on ordinary…

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Jackson County

Significant Restrictions

Off-premise signs and billboards along Interstate 70, I-435 and other freeways in unincorporated Jackson County face…

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Jefferson County

Significant Restrictions

Jefferson County confines new billboards to parcels touching a short list of major routes: Interstate 55, U.S. Highways…

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Kansas City

Significant Restrictions

Outdoor advertising signs near interstates and highways are banned citywide except within 660 feet of qualifying…

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O Fallon

Significant Restrictions

O'Fallon confines billboards to a narrow band along its interstates: Section 410.170(B)(1)(a) requires a…

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St Peters

Some Restrictions

In the City of St. Peters, Missouri, Section 405.765(B) confines billboards, called off-premises signs, to Interstate…

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Waynesville

Some Restrictions

Waynesville allows freeway-facing billboards only on property fronting Interstate 44, outside residential and…

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