A Gazetteer for the United States and Canada
Welcome to O'Fallon ...
The location of O'Fallon has been provided by the Geographic Names Information System (ie- the GNIS).<2>
From the Census Estimates for 2019, O'Fallon has a population of 88,673 people<3> (see below for details).
We don't have a date for the establishment of O'Fallon.
O'Fallon is 590 feet [180 m] above sea level.<4>.
Time Zone: O'Fallon lies in the Central Time Zone (CST/CDT) and observes daylight saving time
The area code for O'Fallon: (636)
The ZIP code for O'Fallon: 63366<5>
Websites for O'Fallon ...
Official Website: www.ofallon.mo.us/
Chamber of Commerce: www.ofallonmochamber.com/
Population Details ...
Taken from the 2019 Census Estimates, O'Fallon had an population of 88,673 people. This is an increase of 11.78% since the 2010 Census (or an increase of 92.06% since the 2000 Census).
At the time of the 2010 Census, O'Fallon had a population of 79,329 people (which is 22.01% of the total population of Saint Charles County). This makes O'Fallon the county's most populous community.
The population of O'Fallon represents 1.32% of the population of Missouri (which has 5,988,927 people), making it the state's 7th most populous community.
With a 2010 count of 79,329 people, the population of O'Fallon increased 71.82% from the 2000 Census (with a count of 46,169 people).
More information can be found on the Census Page for O'Fallon.
Adding O'Fallon to Our Gazetteer ...
As we work on our Gazetteer, we occasionally find mention of a community that is new to us. When we find such a community, we add it to our Gazetteer with the hope of adding more information in the future.
We originally found mention of O'Fallon in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.
In addition, we also found mention of O'Fallon elsewhere: The earliest book where we found it mentioned was in the Business Atlas and Shippers' Guide (1895).
For more details about the above, see References and Mentions for O'Fallon on our Genealogy Page.
Communities Also Named O'Fallon ...
Using our Gazetteer, we have found that there are two Missouri communities named O'Fallon: This one is located in Saint Charles County and the other is located in Saint Louis County.
Beyond Missouri, there are 2 communities that are also named O'Fallon - they are located in and Illinois.
For more information, see our Tidbits & Trivia Page for O'Fallon.
Communities near O'Fallon ...
We have created a list of 10 communities that are near O'Fallon.
To Help With Your Genealogy Research ...
We have a couple of sections for those tracing their genealogy.
We created a list of cemeteries that are in the area around O'Fallon. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for O'Fallon.
Using the information from an 1895 Atlas, we've created a list of communities that were in the area of O'Fallon. Our list includes information such as whether the 1895 community had a post office or railroad service. See our List of 1890's Communities around O'Fallon.
We also have a detailed list of newspapers that have been published in the area around O'Fallon. Our list includes 6 papers. See our Newspapers Page for O'Fallon.
TripAdvisor Tourism Pages for O'Fallon ...
Looking for more information about O'Fallon? A wonderful source is the TripAdvisor website. We always start with the TripAdvisor Tourism page, where you can read an overview with links that will help you find lodging, restaurants and attractions.
In addition to the Tourism page for O'Fallon, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for O'Fallon.
Other Roadside Stops ...
Off-the-Road Links ...
The official website for O'Fallon: www.ofallon.mo.us/
The official website for Saint Charles County: www.saintcharlescounty.org/
The official website for State of Missouri: https://www.mo.gov/
Please keep in mind that we can not guarantee the accuracy or timeliness of the information on this website, so use with care. We encourage you to double-check the information that is critical to you.
If you've found an error or have additional information that you would like to share, please don't hesitate to write. Click here to contact us.
This page was last modified: 11 May 2021