Non emergency police phone numbers for 2 agencies in Jefferson 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.
Jefferson County agencies at a glance
| Agency, number and address | Type | Official website |
|---|---|---|
| Arnold Police Department (636) 296-2222 2101 Jeffco Blvd, Arnold, MO 63010 | Municipal police | arnoldmo.org Checked Nov 2026 |
| Crystal City Police Department (636) 937-4601 | Municipal police | crystalcitymo.gov Checked Aug 2026 |
Who covers which part of Jefferson County
This page lists 2 municipal police departments. A city department only answers for addresses inside its own city limits (Arnold Police Department, Crystal City Police Department). For an address outside city limits, in unincorporated Jefferson County, the county sheriff’s office is normally the agency that responds. Jefferson County has about 231,230 residents on 656 square miles of land; about 25,776 of them (11%) live in the 2 towns with their own police departments listed here (Arnold 21,059, Crystal City 4,717) (U.S. Census Bureau, 2023 population estimate).
How far apart they are
The agencies on this page are up to 15 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.
- Arnold Police Department: the nearest other agency listed here is Crystal City Police Department, 14.6 miles away.
- Crystal City Police Department: the nearest other agency listed here is Arnold Police Department, 14.6 miles away.
Neighbouring counties we cover
- St. Louis County (3 agencies, about 23 miles away)
- St. Charles County (2 agencies, about 34 miles away)
- Franklin County (2 agencies, about 38 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 (arnoldmo.org, crystalcitymo.gov). Last check: 1 in Nov 2026, 1 in Aug 2026. Read how we verify numbers.
More of Missouri
Jefferson 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.