U.S. ZIP Code tools

63366 · ZIP Code · O Fallon MO

ZIP Code
63366

O Fallon, MO

City / locality
O Fallon
State
Missouri
ZIP Code type
Type not provided
Latitude
38.8239
Longitude
-90.7427
Coordinate source
GeoNames Postal
Source
GeoNames Postal
Source year
Inherited source snapshot

Some U.S. place names and coordinates come from GeoNames as geographic references. They are not confirmation of the USPS preferred mailing city.

ZCTAs are Census statistical areas. Their boundaries do not represent every USPS ZIP Code or an exact postal delivery boundary.

ZIP Code map

ZCTAs are Census statistical areas. Their boundaries do not represent every USPS ZIP Code or an exact postal delivery boundary.

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Population & demographics

acs/acs5 · 2024

Population & demographics

ACS figures are five-year statistical estimates for a ZCTA. They do not describe individual addresses; consider the margin of error when comparing values.

Estimated population

54,769People · Margin of error ±1,913

Median age

40.4Years · Margin of error ±1.3

Median household income

100,621USD · Margin of error ±6,872

Total households

20,967Households · Margin of error ±800

County

Verified ZIP-to-county crosswalk data is not currently available.

Nearby postal codes

ZIP CodeCity / localityStateDistance calculator
63367Lake Saint LouisMO3.11 Miles / 5.00 km
63368O FallonMO5.07 Miles / 8.15 km
63385WentzvilleMO6.15 Miles / 9.90 km
63376Saint PetersMO7.13 Miles / 11.47 km
63338CottlevilleMO7.19 Miles / 11.57 km
63369Old MonroeMO7.88 Miles / 12.69 km
63304Saint CharlesMO8.76 Miles / 14.09 km
63365New MelleMO10.30 Miles / 16.58 km
62036Golden EagleIL11.01 Miles / 17.72 km
63348ForistellMO11.15 Miles / 17.95 km

Source

GeoNames Postal

Source year: Source vintage not supplied

GeoNames Postal

U.S. Census Bureau Gazetteer

Source year: 2026 Gazetteer

U.S. Census Bureau Gazetteer

U.S. Census Bureau ZCTA cartographic boundaries

Source year: 2020 Census ZCTA cartographic

U.S. Census Bureau ZCTA cartographic boundaries

U.S. Census Bureau ACS 5-year

Source year: 2024 ACS 5-year

U.S. Census Bureau ACS 5-year