List of 7 Zip Codes in O'Fallon, Missouri

On this page, we'll list out the 7 zip codes we have on record for O'Fallon, Missouri in St. Charles County as well as the land area for each zip code.

Missouri is the 21st largest state by total land area, with a land area of 69,707 square miles (180,540 square kilometers) and has a total population of 6,124,160 people as of the most recent U.S. Census survey.

O'Fallon makes up approximately 0.44% of the total land area for Missouri and we have 7 zip codes for the city in our database, which you can see details of below, with land area information for each zip code.

O'Fallon covers the following counties:

• St. Charles County

There is not enough data as of the most recent U.S. Census survey to determine the population of O'Fallon.

Click the zip code link(s) above to get detailed demographics data for the specific zip code (or ZCTA).

Places Near O'Fallon, Missouri

If you want to search and find zip codes for different cities or towns near O'Fallon, Missouri, the list below contains links to each of the 21 Missouri locations we have data for in St. Charles County.

• Augusta
• Cottleville
• Dardenne Prairie
• Defiance
• Flint Hill
• Foristell
• Josephville village
• Lake St. Louis
• Marthasville
• New Melle
• Portage Des Sioux
• St. Charles
• St. Paul
• St. Peters
• Three Creeks village
• Weldon Spring
• Weldon Spring Heights
• Wentzville
• West Alton
• Wright City

Data Source(s)

All of the zip code data on this page is sourced from the United States Census Bureau geography reference files.

Link To or Reference This Page

We spent a lot of time downloading, cleaning, merging, and formatting the data that is shown on the site.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source. We appreciate your support!