| City: | Cottleville, Missouri |
| County: | Saint Charles County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 8:25:18 AM |
| Population: | No Population Data |
| Area Codes: | 314 / 557 / 636 |
| Classification: | PO Box |
| Coordinates: | 38.7464, -90.6536 |
| Quick Link: |
Cottleville's 63338 ZIP serves a commercial corridor along Highway N in Saint Charles County, Missouri, part of the greater St. Louis metropolitan area. This is a PO Box Only Zone: there's no alternative mail delivery across the tiny 0.0016 square mile service area. The post office maintains 133 PO Boxes and delivers to 154 business addresses, all concentrated on Highway N.
With zero residential population within the ZIP boundary, 63338 functions as a business mail hub. The 10 business establishments here employ 109 workers. Mail delivery goes to commercial units along the highway corridor, while the PO Box service supports businesses and possibly residents from nearby Cottleville neighborhoods like Timberwood Farms and Madison Park who prefer box service.
Single commercial street along Highway N corridor with multi-unit business addresses.
ZIP Code 63338 supports both business and residential activity. According to the Business Census (2024), there are 9 business establishments, employing about 103 people with an annual payroll of $4,927,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 308Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 9Source: CBP |
| 1st Quarter Payroll: | $1,184,000Source: CBP |
| Annual Payroll: | $4,927,000Source: CBP |
| # of Employees: | 103Source: CBP |
ZIP Code 63338 is located in Saint Charles County, Missouri, within the St. Louis, MO-IL Metropolitan Statistical Area (CBSA 41180) and Missouri's 3rd Congressional District. This Metro area has a population of 2,812,896 people, about 0.00% of whom live in ZIP Code 63338. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | St. Louis, MO-ILSource: Census |
| CBSA Number: | 41180Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 2,812,896Source: Census |
| MSA: | St. Louis, MO-IL MSASource: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 03Source: USPS |
| Congressional Land Area: | 6851.54 sq miSource: Census |
| PMSA: | --Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 2916678Source: Census |
| Place Name: | Cottleville city; MissouriSource: Census |
We could not locate which school district 63338 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.