Sign Regulations in Montana (2026)
6 rules on the books across Montana, 2 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.
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.
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.
Billings
Some RestrictionsBillings exempts window signs covering up to 25% of a window from sign-area totals; coverage above that counts against…
Read full rule →Yellowstone County
Some RestrictionsIn unincorporated Yellowstone County, window signs are not free of the sign-area cap: the Zoning Code exempts only the…
Read full rule →Freeway-Facing Signs
Restrictions on commercial signs visible from freeways, including height, illumination, and outdoor advertising act compliance.
Billings
Significant RestrictionsBillings allows larger off-premises billboards in the interstate corridor, up to 480 square feet versus 250 square feet…
Read full rule →Yellowstone County
Some RestrictionsIn unincorporated Yellowstone County, billboards along Interstate 90 are confined to a defined Interstate Corridor, 660…
Read full rule →