Sign Regulations in Cass County, MO (2026)
4 rules for unincorporated Cass County, Missouri.
Verified from official government sources
Political Signs
Cass County caps political campaign signs at thirty-two square feet under Section 400.780(A)(9), and timing follows the election-sign rule in Section 400.770(A)(1)(c): a sign may go up once candidates qualify or a ballot question is certified, and it must come down within one week after the election or, for a primary, once a candidate is eliminated.
Cass County Political Campaign Sign Rules
Light RestrictionsCass County Code §§ 400.770(A)(1)(c), 400.780(A)(9)
Election. ... Initiation upon the last day of qualification of candidates or certification of a ballot question and termination within one (1) week after the election of a candidate to office or resolution of a ballot question. For primary elections, termination shall be as noted for candidates who did not advance to the next election for which the primary was held. ... Political campaign signs...
Garage Sale Signs
In unincorporated Cass County, a garage sale sign is exempt from the Zoning Order's sign permit and size rules under Section 400.780(A)(9), but only 'for a period not to exceed three (3) days.' Put the sign up and take it down within that window or it becomes an unpermitted temporary sign under Article XII.
Cass County Garage Sale Sign Duration Limit
Light RestrictionsCass County Code § 400.780(A)(9)
The following signs shall be exempt from the requirements of this Article: ... Temporary event signs, including signs for the sale of household goods at a residence (garage sale) for a period not to exceed three (3) days;
Digital Billboards
Cass County caps electronic message and LED signs with moving or variable light at twelve square feet per face under Section 400.750(E)(3), and billboards specifically may not use any flashing, intermittent, or moving lighting at all unless the County's Special Use Permit for that billboard specifically allows it, per Section 400.800(C)(6)(b).
Cass County Digital and LED Sign Limit
Significant RestrictionsCass County Code §§ 400.750(E)(3), 400.800(C)(6)(b)
Flashing Signs. ... Signs on which the artificial light is variable or moving, such as light emitting diode signs with moving messages, or giving the impression of movement are limited to a maximum of twelve (12) sf on any single sign face. ... Billboards shall not include any flashing, intermittent, or moving lighting or lights, unless specifically accepted by the County in the Special Use Per...
Freeway-Facing Signs
Along state-maintained highways in unincorporated Cass County, a billboard may only stand within 660 feet of the highway right-of-way and needs its own sign permit from the Missouri Department of Transportation, on top of the county's Special Use Permit. Cass County Code § 400.800(C)(3) sets that placement zone, and § 400.800(C)(2) keeps billboards on the same side of the road at least 1,400 feet apart.
Cass County Billboard Highway Setback Rule
Significant RestrictionsCass County Code § 400.800(C)(2)-(3)
A billboard shall not be located closer than one thousand four hundred (1,400) feet from any other billboard on the same side of the road. ... Billboards shall be permitted only within six hundred sixty (660) feet of the nearest edge of the rights-of-way of any State maintained highway or street that is controlled by the State of Missouri Department of Transportation and shall require a sign pe...
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