Sign Regulations in Whatcom County, WA (2026)
3 county-level rules, plus city-specific rules for 1 city in Whatcom County, Washington.
Verified from official government sources
Political Signs
Whatcom County and Bellingham broadly allow political and temporary signs on private property as protected speech. Only official traffic signs belong in the state highway right-of-way, and local sign codes must be content-neutral after Reed v. Gilbert.
Whatcom County Political Sign Rules
Few RestrictionsWSDOT, Political Signs and State Highways (WAC 468-66)
Only official traffic control signs may be placed in the state highway right-of-way. All other signs are illegal and will be removed by maintenance crews.
Window Signs
Small window signs in unincorporated Whatcom County businesses are exempt from the zoning code's sign permit rules only up to three square feet each, and even then the exempt signs together can't cover more than 25 percent of any single window's area, under WCC § 20.80.470(3).
Whatcom County Window Sign Size Limit
Light RestrictionsWCC § 20.80.470(3)
The following types of signs shall be exempt from the regulations of this section and zoning districts; provided, that such signs shall conform to the general provisions of this section. ... (3) Small window signs up to three square feet in business uses; provided, that such signs do not cover more than 25 percent of the area of any window.
Freeway-Facing Signs
Off-premises billboards facing Interstate 5 in unincorporated Whatcom County can sit as close as five feet from the interstate right-of-way, but only with sign-off from every agency with jurisdiction. Everywhere else, off-premises signs need a 15-foot right-of-way setback, stay 500 feet from homes, 1,000 feet from schools, churches and parks, and are capped county-wide at 18 structures.
Whatcom County Freeway-Facing Sign Setback Rules
Significant RestrictionsWCC § 20.80.215(1), (3); § 20.80.410(3)
Off-premises advertising signs shall be subject to the following setbacks. WCC § 20.80.210 shall not apply. (1) No portion of a sign shall be placed within 15 feet of any right-of-way except as provided in subsection (3) of this section. ... (3) Off-premises advertising signs oriented towards Interstate 5 may be up to within five feet of the interstate right-of-way when approved by all agencies...
Sign Regulations by City in Whatcom County
1 cities in Whatcom County have their own sign regulations rules. Each link goes to that city's dedicated page with code citations.
All Whatcom County ordinances
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