| City: | Flinthill, Missouri |
| County: | Saint Charles County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 12:06:59 AM |
| Population: | No Population Data |
| Area Code: | 636 |
| Classification: | PO Box |
| Coordinates: | 38.8629, -90.8602 |
| Quick Link: |
Flinthill isn't a town in the traditional sense. It's a small crossroads community in St. Charles County, Missouri, near the growing city of Wentzville in the St. Louis metro area. The post office serves a rural area along Highway P with 12 PO Boxes and limited rural route delivery.
This is a PO Box Only Zone, meaning there's no alternative mail delivery system in the immediate area. Residents rely on the Flinthill post office for mail access. The ZIP code itself has no residential population and covers essentially a point location, geographically falling within the larger 63385 ZIP territory.
Despite the small scale, the area supports 5 business establishments employing 66 people, plus 18 business delivery points. The rural character is clear from the single street name (Highway P) and the use of rural carrier routes rather than city delivery.
Only Highway P appears in postal records, indicating a minimal rural crossroads location.
ZIP Code 63346 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 66 people with an annual payroll of $2,929,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 29Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $700,000Source: CBP |
| Annual Payroll: | $2,929,000Source: CBP |
| # of Employees: | 66Source: CBP |
ZIP Code 63346 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 2,809,414 people, about 0.00% of whom live in ZIP Code 63346. 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: | 2,809,414Source: 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: | --Source: Census |
| Place Name: | --Source: Census |
We could not locate which school district 63346 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.