Sign Regulations in Winnebago County, IL (2026)

3 rules for unincorporated Winnebago County, Illinois.

Verified from official government sources

Note: These county rules apply to unincorporated areas of Winnebago County. If you live within an incorporated city, that city's own rules apply: see the city list below.

Garage Sale Signs

Winnebago County exempts garage and yard sale signs from a sign permit, but caps size, count, and how long they can stay up.

Winnebago County Garage Sale Sign Rules

Some Restrictions

Winnebago County UDO § 22.8.8

22.8.8 Garage or Yard Sale Signs. Temporary residential garage or yard sale signs shall be exempt from sign permit requirements, subject to the following: A. Temporary residential garage or yard sale signs shall not exceed twelve (12) square feet each. Only two (2) residential garage or yard sale signs are permitted per zoning lot. B. Signs must be posted no more than twenty-four (24) hours pri...

Full ordinance details →Official source ↗

Digital Billboards

Electronic billboards are permitted only in CG and Industrial districts, need a special use permit in CC and OP districts, and are banned everywhere else in unincorporated Winnebago County.

Winnebago County Electronic Billboard Rules

Significant Restrictions

Winnebago County UDO, Ch. 90, Art. 22, Sec. 22.10.1(F)

Electronic billboards are a permitted use only in the CG and Industrial Districts. A special use permit is required for electronic billboards in the CC and OP Districts... Each message or image must be static for a minimum of eight (8) seconds. Animation, streaming video and images that move or give the appearance of movement are prohibited. An electronic billboard must not exceed a maximum ill...

Full ordinance details →Official source ↗

Window Signs

Window signs are exempt from a sign permit as long as all of them combined cover no more than 40% of the total window area.

Winnebago County window sign coverage limit

Some Restrictions

Winnebago County UDO Sec. 22.8.21

Window Signs. Window signs shall be exempt from sign permit requirements, provided that the total of all window signs, whether temporary or permanent, shall occupy no more than forty percent (40%) of the total window area. Neon window signs are subject to the following: A. Neon window signs must be located entirely inside the window. No exterior neon signs are permitted.

Full ordinance details →Official source ↗

All Winnebago County ordinances

See every category we cover for Winnebago County: parking, noise, fences, fires, animals, pools, and more.

Winnebago County Ordinance Hub →