O'Fallon, MO Noise Ordinances: Amplified Music & Outdoor Sound (2026)
Amplified music rules in O'Fallon, MO, also called sound permit, PA system, or live music ordinances, set decibel limits, time-of-day restrictions, and when permits are required.
Key Facts
- Park decibel cap
- 75 dB at 15 feet
- Permit authority
- Parks Director
- Applies in
- City parks and festival districts
- Advertising loudspeakers
- Regulated separately, § 215.237(G)(2)
- Non-compliance risk
- Arrest and ejection from park
Summary
In O'Fallon's parks and declared festival districts, amplified music and sound equipment cannot exceed 75 decibels measured 15 feet from the source without a written permit from the Parks Director, under City Code § 225.070(7)(a). Citywide, loudspeakers used for commercial advertising are separately restricted under § 215.237(G)(2).
Musical Instruments, Sound Equipment. No person shall operate or play any musical instrument, radio, mechanical or electronic audio or video device, loudspeaker, public address system or sound-amplifying equipment of any kind within the boundaries of any City park or declared festival district in such a manner as to cause the sound emanating therefrom to exceed a loudness of seventy-five (75) decibels when measured on the seventy (70) D.B. scale at a distance of fifteen (15) feet from the sound source, without a written permit issued by the Director.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4860992; v58 updated 2026-05-14; through 05-14-2026).
Full Breakdown
070(7)(a) prohibits operating or playing any musical instrument, radio, audio or video device, loudspeaker, public address system or sound-amplifying equipment within any City park or declared festival district in a manner that causes the sound to exceed 75 decibels, measured on the 70 dB scale at a distance of 15 feet from the source, unless a written permit has been issued by the Director. 070(7)(b) lets the Director or Police order the sound reduced if it unduly disturbs other park occupants or nearby residents, regardless of the permit or measured level.
070(7)(c). 237(G)(2) makes it a violation to broadcast sound from a radio, phonograph, loudspeaker or amplifier from the public streets for commercial advertising or to attract attention to a building when the sound is excessive under the chapter's criteria. 237(M)(6)).
Violations & Fines
Violating the park sound limit or ignoring a Director/Police order to lower the volume can lead to arrest for the underlying offense and ejection from the park under § 225.070(7)(c). A citywide amplified-sound violation under § 215.237 follows the notice-and-hearing process in § 215.237(Q)-(S) before referral to Municipal Court, where § 100.010's general penalty of up to $500.00 and/or three months imprisonment applies.
Frequently Asked Questions
Can I play amplified music in an O'Fallon park?
Is a business allowed to use an outdoor loudspeaker to advertise in O'Fallon?
What happens if someone ignores an order to lower amplified sound in an O'Fallon park?
Sources & Official References
Other rules in O'Fallon
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