Illinois sets no statewide residential fence-height cap, so each Champaign County city fixes it by zoning. In the City of Champaign, front-yard fences run 3 feet if solid or 6 feet if transparent, and side and rear fences up to 8 feet.
In east-central Illinois the height of a residential fence is a municipal zoning question, not a county or state one. The City of Champaign is comparatively generous: within the front-yard setback a solid fence is capped at 3 feet while an open, transparent fence may reach 6 feet, and around the side and rear a fence may stand up to 8 feet. Urbana and the smaller towns of Rantoul, Savoy, and Mahomet set their own limits, commonly 4 feet in front and 6 feet in rear. Corner lots near University of Illinois intersections must keep fences low inside the sight-triangle so drivers can see. Rural, unincorporated parcels fall under the Champaign County Zoning Ordinance.
A fence taller than the zoning limit draws a violation notice from the city planning or zoning office, which can order it lowered or removed, with daily fines if it is not corrected.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Champaign County's height limits rules stack up against other locations.
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