Non emergency police phone numbers for 2 agencies in St. Charles County, Missouri, with which area each one covers and the official source used to check every number.
These are non emergency lines. If someone is in danger or a crime is in progress, call 911.
St. Charles County agencies at a glance
| Agency, number and address | Type | Official website |
|---|---|---|
| St. Charles County Police Department (O’Fallon) (636) 949-3000 101 Sheriff Dierker Court, O’Fallon, Missouri, 63366 | County police | sccmo.org Checked Nov 2026 |
| St. Peters Police Department (636) 278-2222 1020 Grand Teton Drive, Saint Peters, Missouri, 63376 | Municipal police | stpetersmo.net Checked Aug 2026 |
| St. Charles County Police Department (Weldon Spring) (636) 949-3000 891 Technology Drive, Weldon Spring, Missouri, 63304 | County police | sccmo.org Checked Nov 2026 |
The St. Charles County Police Department appears 2 times because we list it for O’Fallon and Weldon Spring; it is one agency with one non-emergency number, (636) 949-3000.
Who covers which part of St. Charles County
This page lists 1 municipal police department and 1 countywide agency. A city department only answers for addresses inside its own city limits (St. Peters Police Department). Outside those limits, in unincorporated parts of the county, calls go to the St. Charles County Police Department on (636) 949-3000. St. Charles County has about 416,659 residents on 561 square miles of land; about 59,413 of them (14%) live in the one town with its own police department listed here (Saint Peters 59,413) (U.S. Census Bureau, 2023 population estimate).
How far apart they are
The agencies on this page are up to 8 miles apart. If you live near a city line, check which side your address is on before calling: each department only handles its own area.
- St. Charles County Police Department (O’Fallon): the nearest other agency listed here is St. Peters Police Department, 3.5 miles away.
- St. Peters Police Department: the nearest other agency listed here is St. Charles County Police Department (O’Fallon), 3.5 miles away.
- St. Charles County Police Department (Weldon Spring): the nearest other agency listed here is St. Peters Police Department, 6.8 miles away.
Neighbouring counties we cover
- St. Louis County (3 agencies, about 20 miles away)
- Jefferson County (2 agencies, about 34 miles away)
- Franklin County (2 agencies, about 36 miles away)
How these numbers were checked
Each number was compared with the one published by an official source: the agency’s own site, its city or county government, or a state agency (sccmo.org, stpetersmo.net). Last check: 2 in Nov 2026, 1 in Aug 2026. Read how we verify numbers.
More of Missouri
St. Charles County is one of several we cover in Missouri. See all non emergency police numbers in Missouri, or tell us if a municipality in this county is missing.