Noise Ordinance in St. Peters, Missouri
Noise in St. Peters is regulated by St. Peters City Code, Title II, Chapter 210 (Offenses), Article XI (Noises), §§ 210.390–210.400. Quiet hours are varies by activity — see details. This page summarizes what the ordinance actually says, section by section, with links to the official code text.
What the St. Peters Noise Ordinance Says
St. Peters regulates noise through Article XI (Noises) of Chapter 210 of its City Code, chiefly Section 210.390, "Regulation of Noise Levels" (adopted by Ord. No. 4270 in 2005, amended by Ord. No. 7236 in 2019). The ordinance combines a subjective standard — it is unlawful to create any "loud, disturbing or unnecessary noise" that unreasonably disturbs the quiet, comfort, or repose of any individual — with objective decibel tables. There are no blanket citywide quiet hours; instead, allowable noise levels drop at night: in residential districts the nighttime limits (roughly 54–65 dBA depending on averaging period) apply from 10:30 P.M. to 7:00 A.M., and in commercial districts lower limits apply from midnight to 7:00 A.M. Sound is measured in dBA (Leq) at the front building line of the receiving property over 2-, 8-, or 15-minute averaging periods, and the limits of the receiving property's zoning district control.
Specific prohibitions include construction or demolition noise exceeding 65 dBA at the nearest residential property line outside permitted working hours (weekdays 6:30 or 7:00 A.M. to 6:00 P.M. depending on season, Saturdays from 8:00 A.M., Sundays from 9:00 A.M.), loud vehicle horns and unmuffled exhausts, loudspeakers on vehicles for advertising, prolonged yelling on public streets (particularly 10:30 P.M.–7:00 A.M.), noisy animals, garage/filling station noise in residential districts between 11:00 P.M. and 7:00 A.M., and solid waste collection in or near residential areas at night or on Sundays. Exemptions cover permitted events and festivals, church bells (6:00 A.M.–10:30 P.M.), emergency vehicles and emergency work, aircraft, trains, holiday fireworks, and Board of Aldermen-approved special event permits.
Enforcement runs through the Code Enforcement Officer (the City Administrator or designee), with an administrative notice-and-hearing process before charges are filed in St. Peters Municipal Court. Conviction carries a fine of up to $500, and each day of violation counts as a separate violation. A companion provision, Section 210.400, bars motor vehicle racetracks or speedways from operating between 11:00 P.M. and 12:00 Noon Sunday through Thursday and between 11:30 P.M. and 12:00 Noon on Fridays and Saturdays.
"Each day of such violation shall constitute a separate violation." — § 210.390(I)(5)
Quiet Hours in Detail
No single blanket "quiet hours," but stricter nighttime decibel limits apply 10:30 P.M.–7:00 A.M. in residential zoning districts and 12:00 Midnight–7:00 A.M. in commercial districts; the code treats 10:30 P.M.–7:00 A.M. as residential "sleeping hours" for enforcement purposes (§ 210.390(D)(5)), and prolonged yelling/shouting on public streets is expressly prohibited "particularly between the hours of 10:30 P.M. and 7:00 A.M." (§ 210.390(C)(17))
Decibel Limits
§ 210.390(F) Objective Noise Standards, measured dBA Leq at the front building line of the receiving property over 15/8/2-minute averaging periods. Residential districts: 7:00 A.M.–10:30 P.M. = 59–61 dB (15 min), 62–64 dB (8 min), 68–70 dB (2 min); 10:30 P.M.–7:00 A.M. = 54–56 / 57–59 / 63–65 dB. Commercial districts and the "S-D" Special Old Town Overlay District: 7:00 A.M.–Midnight = 69–71 / 72–74 / 78–80 dB; Midnight–7:00 A.M. = 64–66 / 67–69 / 73–75 dB. Industrial districts (same day and night): 74–76 / 77–79 / 83–85 dB. Multifamily buildings: same limits between units as single-family, measured inside the receiving unit with windows closed. Also: construction/demolition noise capped at 65 dBA at the nearest residential property line outside permitted hours (§ 210.390(C)(8)); racing vehicles/events capped at 93 dBA measured from a different land-use category (§ 210.390(C)(15)).
Enforcement and Penalties
Enforced by the Code Enforcement Officer, defined as the City Administrator or his/her duly authorized representative (§ 210.390(A), (D)). Process (§ 210.390(I)): attempted amicable abatement, then written notice and an administrative hearing before the City Administrator or designate (held at least 7 days after notice); on a finding of violation, a complaint may be signed at the Police Department and, if the City Prosecutor proceeds, a summons issues returnable in St. Peters Municipal Court. Penalty: fine of up to $500.00 upon conviction; each day of violation constitutes a separate violation (§ 210.390(I)(5)). Racetrack violations under § 210.400(C) are deemed an ordinance violation.
Exemptions
§ 210.390(G) exempts: crowd sounds from permitted outdoor athletic events, festivals, and concerts; safety signals/warning devices/emergency pressure relief valves; church bells and chimes (actual or electronic) between 6:00 A.M. and 10:30 P.M.; authorized emergency vehicles; permitted parades/picketing/public demonstrations (max 2 hours per 24-hour period); City-sponsored public events; properly equipped aircraft; noisemakers and fireworks on holidays (defined as Memorial Day, Independence Day, Labor Day, and December 31) or under a pyrotechnics permit; trains/railroad rolling stock; emergency work; and special event permits approved by the Board of Aldermen. Construction/demolition is allowed without the 65 dBA cap during: weekdays 6:30 A.M.–6:00 P.M. (June–August), weekdays 7:00 A.M.–6:00 P.M. (rest of year), Saturday 8:00 A.M.–6:00 P.M., Sunday 9:00 A.M.–6:00 P.M.; public-facility and utility repair/construction and urgent-necessity work are excepted (§ 210.390(C)(8)).
Key Sections of the Code
| Section | What It Covers |
|---|---|
| § 210.390(A) | Definitions (A-weighted sound level, decibel, Code Enforcement Officer, outdoor amplified sound, time-weighted average, holiday, etc.) |
| § 210.390(B) | General prohibition on loud, disturbing, or unnecessary noise; noises from legally operating businesses in normal operations are subject to the Section's objective noise level limits |
| § 210.390(C) | Noises expressly prohibited: 19 items including horns, sirens, amplified music, construction outside permitted hours (65 dBA cap), racing vehicles (93 dBA cap), yelling at night, animals, night garage operations, night/Sunday trash collection |
| § 210.390(D) | Enforcement factors the Code Enforcement Officer weighs (intensity, time of day, zoning, duration, sleeping hours 10:30 P.M.–7:00 A.M.) |
| § 210.390(E) | Measurement methodology (front building line, ANSI Type S1A meter, A-weighting, slow response, Leq averaging, documentation) |
| § 210.390(F) | Objective Noise Standards — allowable dB tables by zoning district (incl. "S-D" Special Old Town Overlay treated as commercial), time of day, and 15/8/2-minute averaging period (amended by Ord. No. 7236, 12-19-2019) |
| § 210.390(G) | Exceptions: permitted events, safety signals, church bells 6:00 A.M.–10:30 P.M., emergency vehicles, permitted demonstrations, city events, aircraft, holiday fireworks, trains, emergency work, special event permits |
| § 210.390(H) | Violations declared a public nuisance (applies within city and 1/2 mile of boundaries) |
| § 210.390(I) | Violation and penalty: notice, administrative hearing, Municipal Court prosecution; fine up to $500, each day a separate violation |
| § 210.400 | Motor vehicle racetracks/speedways: no operation 11:00 P.M.–12:00 Noon Sun–Thu and 11:30 P.M.–12:00 Noon Fri–Sat; violation is an ordinance violation |
Official Source
This summary is based on the official municipal code text. Always confirm current rules with the city before relying on them — ordinances are amended regularly.
- St. Peters City Code, Title II, Chapter 210 (Offenses), Article XI (Noises), §§ 210.390–210.400 — official code text (eCode360)
- Missouri statewide noise ordinance guide
Last verified against the official code: 2026-07-08.
This page is an informational summary, not legal advice. For disputes or citations, consult the full code text or a local attorney.