Sign Regulations in O'Fallon, Illinois
O'Fallon, Illinois has specific sign regulations covering 30 sign types across 8 zoning districts. Regulated sign types include Flag (Non-Commercial), Art/Statue/Monuments (<10 sq ft), Address/Occupant Identification Sign. Height restrictions apply. Permits are required for most commercial signs. Use PermitPal to get instant access to the complete regulations.
Data last verified: April 20, 2025
Sign Regulation Overview for O'Fallon, Illinois
Sample Sign Requirements in O'Fallon
| Sign Type | Max Height | Max Area | Setback |
|---|---|---|---|
| Flag (Non-Commercial) | Pole max 35 feet (special use needed for more) | Flag length max 10 feet | — |
| Art/Statue/Monuments (<10 sq ft) | — | 10 square feet | — |
| Address/Occupant Identification Sign | — | Single-family: 3 sq ft; Multifamily: 6 sq ft | — |
* Sample data shown. Actual requirements may vary by zone. Use PermitPal for complete, location-specific regulations.
PermitPal Coverage for O'FallonFull Coverage
Sign Types Covered
30
- Flag (Non-Commercial)
- Art/Statue/Monuments (<10 sq ft)
- Address/Occupant Identification Sign
- Temporary Non-Commercial Sign
- +2 more types
Zoning Districts
8
Different zoning districts with specific sign regulations
Data Includes
- Permit requirements
- Height restrictions
- Illumination rules
Other Cities in Illinois
Frequently Asked Questions
Sign height limits in O'Fallon vary by zone and sign type. Wall signs typically range from 25-40 feet, while monument signs are usually limited to 6-10 feet. Use PermitPal to get exact requirements for your property.
To get a sign permit in O'Fallon, submit an application to the local building or planning department with sign dimensions, location, and design specifications. Our data confirms permits are required for most commercial signs. Processing typically takes 1-4 weeks. PermitPal helps you identify specific requirements and prepare complete applications.
In O'Fallon, regulated sign types include Flag (Non-Commercial), Art/Statue/Monuments (<10 sq ft), Address/Occupant Identification Sign, Temporary Non-Commercial Sign, and 2 more types. Most commercial signs require permits. Temporary signs and certain small signs may be exempt. Use PermitPal for specific exemptions.
Sign setback requirements in O'Fallon vary by zone and sign type, typically ranging from 5-15 feet from property lines. Use PermitPal for specific setback requirements at your location.
Digital and LED signs in O'Fallon are regulated with specific requirements for brightness, animation, and message duration. O'Fallon has documented illumination rules in our database. Use PermitPal to see the exact requirements for electronic message centers.
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O'Fallon, Illinois Sign Rules at a Glance
O'Fallon, Illinois regulates 30 sign types across 8 zoning districts. Freestanding Signs in the Non-residential zoning lots zoning district are capped at 6 ft (plus 1 ft/additional 4 ft setback, max 10 ft) tall, Max 100 sq ft, and 12 ft wide, with a 20 ft from side and rear lines; no overhang of property/right-of-way setback (Sec. § 158.165(A)(1), § 158.166(A)(1)-(3)). Most commercial signs in O'Fallon require a permit.
Detailed Sign Ordinance Requirements for O'Fallon, Illinois
Sign Rules by Zoning District in O'Fallon (8 zones)
| Zoning District | Sign Types Regulated | Max Height | Max Area | Permit Required |
|---|---|---|---|---|
| General Regulations For All Zones | 10 | Pole max 35 feet (special use needed for more) | Flag length max 10 feet | — |
| Residential zoning lots | 4 | Flagpole: 20 ft | 40 sq ft | — |
| Non-residential zoning lots | 10 | 25 ft or height of structure (inflatable) | 300 sq ft per sign | — |
| I-64 frontage lots (Non-residential zoning lots) | 2 | 35 ft | 250 sq ft | — |
| Highway 50 lots (Non-residential zoning lots) | 1 | 20 ft | 126 sq ft | — |
| Multiple tenant lots (Non-residential zoning lots) | 1 | 8 ft at property line (plus 1 ft per additional 4 ft setback, max 12 ft) | 132 sq ft | — |
| Large developments (Non-residential zoning lots) | 1 | 30 ft (or 55 ft with I-64 exception) | 288 sq ft per face (can be up to 450 sq ft and 55 ft high on I-64 frontage by Council approval) | — |
| Residential conversions (Non-residential zoning lots) | 1 | 6 ft | 32 sq ft | — |
Zone-by-Zone Sign Requirements in O'Fallon(sample of 3 of 8 zones)
General Regulations For All Zones
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Flag (Non-Commercial) | Pole max 35 feet (special use needed for more) | Flag length max 10 feet | — | — | Up to three | Any zoning lot | — | Unlock | § 158.163(A)(1) |
| Art/Statue/Monuments (<10 sq ft) | — | 10 square feet | — | — | — | Integral to a permanent structure | — | Unlock | § 158.163(A)(2) |
| Address/Occupant Identification Sign | — | Single-family: 3 sq ft; Multifamily: 6 sq ft | — | — | One per street frontage | Each street frontage | — | Unlock | § 158.163(A)(3) |
| Temporary Non-Commercial Sign | — | 6.25 sq ft per sign, 18 sq ft aggregate per lot | — | — | — | Non-vacant zoning lot with owner consent | — | Unlock | § 158.163(A)(4) |
| Temporary Garage Sale Sign | — | 6.25 sq ft | — | — | — | Residential lots | — | Unlock | § 158.163(A)(5) |
| Temporary Construction/Home Improvement Sign | Commercial: 8 ft | Residential: 6.25 sq ft (one); Commercial: 32 sq ft (two max) | — | — | Residential: 1; Commercial: 2 | On-site (construction site) | — | Unlock | § 158.163(A)(6) |
| Real Estate Sign | — | Residential: 6.25 sq ft; Non-residential: 32 sq ft; I-64: 120 sq ft | — | — | One per street front | On lot for sale/rent/lease | — | Unlock | § 158.163(A)(7) |
| Property Regulation Sign | — | 3 sq ft | — | — | — | On property regulated (incl. vacant) | — | Unlock | § 158.163(A)(8) |
Residential zoning lots
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Subdivision Entry Sign | 10 ft | 40 sq ft | — | — | At each major entrance | Major entrance, within outlot or sign easement | — | Unlock | § 158.164(A) |
| Temporary Subdivision Promotion Directional Sign (On-site) | 10 ft (max 64 sq ft with Council) | 32 sq ft (up to 64 sq ft with City Council approval) | — | — | 1 per zoning lot | On-site within subdivision (5+ lots) | — | Unlock | § 158.164(B) |
| Temporary Subdivision Promotion Directional Sign (Off-site) | 10 ft | 32 sq ft (up to 64 sq ft with City Council approval) | — | — | 1 additional per subdivision | Outside subdivision (for subdivisions of 25+ lots upon Council approval) | — | Unlock | § 158.164(B) |
| Temporary Subdivision Promotion Flag | Flagpole: 20 ft | 35 sq ft per flag | — | — | 1 per 10 ft frontage, max 10 | Within 50 ft of subdivision entrance; newly platted subdivisions 25+ lots | — | Unlock | § 158.164(C) |
Non-residential zoning lots
| Sign Type | Max Height | Max Area | Max Width | Setback | Signs Allowed | Location | Permit Required | Premium Details(Illumination, Size Formula, Permit Requirements, Additional Requirements — available with a free PermitPal account) | Ordinance Citation |
|---|---|---|---|---|---|---|---|---|---|
| Freestanding Sign | 6 ft (plus 1 ft/additional 4 ft setback, max 10 ft) | Max 100 sq ft | 12 ft | 20 ft from side and rear lines; no overhang of property/right-of-way | One per lot; two if two collector/arterial streets (monument only, Option 2) | Adjacent to front property line, fully within landscaped area | — | Unlock | § 158.165(A)(1), § 158.166(A)(1)-(3) |
| Freestanding Sign - Option 2 (Second Collector/Arterial Frontage, Monument Only) | 6 ft (plus 1 ft/additional 4 ft setback, max 10 ft) | Max 100 sq ft | 12 ft | 20 ft side and rear; plus front setback as standard | One additional | On second collector/arterial frontage. Must be monument style. | — | Unlock | § 158.166(A)(1)(a) |
| Wall Sign | — | 300 sq ft per sign | — | — | Max 3 (4 for certain locations/developments, see citation) | Each wall facing street or on/off-site parking (max 3 per establishment; 4 per specific street/development locations unless abutting residential zone) | — | Unlock | § 158.165(A)(2), § 158.166(B) |
| Projecting Sign | — | 16 sq ft (counts against wall sign allowance) | — | At least 8 ft above grade; see specifics for projection | One per establishment | Follows wall facing street frontage | — | Unlock | § 158.165(A)(3), § 158.166(C) |
| Temporary Sign (with permit) | — | 24 sq ft (wall) or 6 sq ft (ground) | — | — | One per establishment | Same zoning lot as establishment, outside public right-of-way | — | Unlock | § 158.165(B)(2)(a,2) |
| Temporary Banner/Inflatable/Grand Opening Sign | 25 ft or height of structure (inflatable) | Banner: 48 sq ft (none >12 ft in any one dimension); Inflatable: not to exceed height of building or 25 ft | — | — | — | On lot of opening business | — | Unlock | § 158.165(B)(2)(b) |
| Temporary Sign (no permit, weekends/holidays only) | — | 24 sq ft (wall), 6 sq ft (ground) | — | — | One per establishment | Same zoning lot, outside sight distance triangle | — | Unlock | § 158.163(B) |
| Temporary Sandwich Board Sign | 4 ft | 6 sq ft | — | — | One per establishment | Within 10 ft of primary entrance, on non-residential lot | — | Unlock | § 158.165(B)(3) |
PermitPal covers all 8 zoning districts in O'Fallon — full sign requirements for every zone, plus illumination rules, size formulas, and permit requirements for every sign type — with a free account.
See all 8 zones for O'Fallon — start freeProhibited Signs in O'Fallon
- Any sign not expressly permitted by the ordinance is prohibited, unless expressly authorized by a Planned Use District ordinance.
- Signs not kept in good repair and appearance are prohibited and declared a nuisance.
- No sign shall revolve, rotate or mechanically move in any manner.
- No sign shall have blinking, flashing, or fluttering lights, or other illuminating devices with changing light intensity, brightness or color. Beacon lights, searchlights and illumination by open flame are prohibited.
- No sign may be placed so as to impair the visibility of any official highway sign or marker or obstruct the visibility of any other sign.
- Signs may not be placed on any private or public property without the consent of the owner or person with authority.
- Signs shall not be located in a public right-of-way or within the sight distance triangle, except as otherwise exempted.
- No sign shall be erected, relocated or maintained so as to prevent access to, ingress through or egress from, any door, window, fire escape or driveway.
- No sign shall be erected, relocated or maintained in such a manner that it interferes with, obstructs the view of, or is likely to be confused with, any authorized traffic sign, signal or device.
- Signs shall not be located within the sight distance triangle or otherwise cause a traffic hazard.
- No animation or movement of any content is permitted on changeable copy signs.
- No red, yellow, green or other color light may be used in such a manner as to confuse or interfere with vehicular or pedestrian traffic.
- No exposed reflective type bulb, strobe light, or incandescent lamp shall be exposed to any public street or adjacent property.
- Illuminated signs must not cast light directly onto any public right-of-way or adjoining residential/agricultural properties.
- No sign may impede or block any pedestrian accessway.
- Signs or sign structures constructed, repaired, or altered without a validly issued sign permit (except exemptions) are prohibited.
- Signs attached to any public utility pole, structure, bench, street tree, fence, fire hydrant, bridge, curb, sidewalk, or other location on public property are prohibited.
- Portable signs and pole/elevated signs are prohibited.
- Billboards (new), except those lawfully existing at the effective date of chapter, are prohibited.
- Balloons and inflatables are prohibited except by special event or temporary sign permit.
- Any streamer, pennant, propeller, bunting, artificial device, figure, shape, color, sound, light or exhibit intended to attract attention to the use or business is prohibited.
- Any person with a commercial sign or in a commercially-identified costume intended to attract attention is prohibited.
- Signs painted directly on exterior covering materials of any structure are prohibited.
- Signs on vacant properties are prohibited except as expressly authorized.
- Signs advertising any commercial activity not related to the zoning lot on which such sign is located (off-premise commercial signage), unless protected by law, are prohibited.
- Signs placed on vehicles or trailers for display purposes are prohibited, except as incidental to business operations.
- Roof (rooftop) signs, other than freestanding, which extend above the parapet, roof line, or canopy/awning, are prohibited.
- Signs and/or related supports located in or above public property or rights-of-way are prohibited unless authorized by law and proper jurisdiction.
- Any sign that is not authorized by or does not comply with the sign regulations is prohibited.
- No person shall nail, tack, paste, paint, or fasten any sign onto any utility pole, traffic sign, or public post.
- No sign, advertisement, or banner shall be placed over or across any street or alley without written approval of the City Council.
- No person shall place, maintain, or display on or in view of any highway any unauthorized sign that imitates or interferes with traffic-control devices, or that attempts to direct traffic or blocks effectiveness of official signs.
- No commercial advertising is allowed on traffic signs or signals placed on highways.
- No sign or marker owned by the city (traffic-control signs, etc.) may be possessed by persons other than authorized city employees or contractors.
- No person shall sell or offer for sale any traffic-control device to be used in the city which does not conform to code requirements.
- No sign shall be erected, relocated, or maintained as to conflict with the adopted International Building Code.
Exempt Signs in O'Fallon
- Public notices and legal notices required by law.
- Signs exempted by federal, state or local law.
- Official traffic or government signs, including safety or directional signs, plaques and signs of historic interest, or any sign otherwise authorized by the city and subject to approval by applicable government or property owner.
- Holiday or seasonal decorations and displays placed on private property for up to 90 days, containing no commercial advertising, name, or logo, and which do not create a nuisance.
- Flags (up to three) without commercial messages (e.g., flags of nations, states, cities, organizations), with pole height restrictions. Flagpoles over 35 feet require a permit.
- Commemorative tablets, historical monuments, statues, and artwork of less than 10 square feet that are an integral part of a permanent structure.
- Permanently affixed address and residential occupant identification signs on the zoning lot, under certain size limits.
- Temporary non-commercial signs on non-vacant properties with owner's consent, as limited by size and duration requirements.
- Temporary garage sale signs within specified size and time limits.
- Temporary construction and home improvement signs, with limitations on size, number, and duration.
- Real estate signs advertising sale, rental, or lease of the lot where located, subject to size, number, and removal requirements. Open house directional signs on weekends are also exempt.
- Property regulation signs (no trespassing, no hunting, etc.) not exceeding three square feet.
- Utility company signs for public safety or location of facilities; signs over one square foot require a permit and demonstration of need.
- Scoreboards on athletic fields, subject to city permit requirements.
- Any other sign required by law to be allowed in all districts; permit required only if not inconsistent with law.
- Directional/informational signs (up to one square foot per face) for public convenience are permitted without a sign permit on non-residential lots.
Sign Plan & Submission Notes for O'Fallon
- All signs require a sign permit unless specifically exempted by the ordinance.
- Applications must be submitted to the Director with detailed drawings, descriptions, and all information necessary to determine compliance.
- Illuminated signs require a separate electrical permit and/or inspection.
- Sign permits are not required for certain exempted categories (see general exemptions).
- Stamped structural drawings are required for freestanding signs ten feet or over or as otherwise required by the adopted Building Code.
- Aggregate or annual permits may be issued for certain categories of supplemental signage (such as temporary banners, inflatables, etc.) on qualifying non-residential lots.
- Sign area calculations, setback calculations, and all other technical criteria must be met and may require specific plans for review.
- Development identification signs located within a subdivision or development may require supporting plan documents such as subdivision plats or development plans for approval.
- For modifications to signage in a Planned Development District or to use alternative materials/designs, such modifications must be approved as part of the Planned Development District ordinance.
- No references found in the provided ordinance text to 'Master Sign Plan', 'Sign Plan', or required variance/planning meetings for signs outside of (but including) notes on planned development and special use permit processes.