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O'Fallon, Missouri
(Saint Charles County)

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Welcome to O'Fallon ...

The city of O'Fallon is located in Saint Charles County<1>.

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.

  • Saint Charles [Saint Charles County]
    • Jump to our Gazetteer entry for Saint Charles
    • Saint Charles [Saint Charles County] lies 9 miles [14.5 km]<6> to the east of O'Fallon
    • Estimated population in 2019: 71,028 people
    • Jump to Google Maps centered on Saint Charles
    • Jump to TripAdvisor's Tourism page for Saint Charles<7>
  • Chesterfield [Saint Louis County]
    • Jump to our Gazetteer entry for Chesterfield
    • Chesterfield [Saint Louis County] lies 11 miles [17.7 km]<6> to the southeast of O'Fallon
    • Estimated population in 2019: 47,538 people
    • Jump to Google Maps centered on Chesterfield
    • Jump to TripAdvisor's Tourism page for Chesterfield<7>
  • Wentzville [Saint Charles County]
    • Jump to our Gazetteer entry for Wentzville
    • Wentzville [Saint Charles County] lies 7 miles [11.3 km]<6> to the west of O'Fallon
    • Estimated population in 2019: 41,784 people
    • Jump to Google Maps centered on Wentzville
    • Jump to TripAdvisor's Tourism page for Wentzville<7>
  • Wildwood [Saint Louis County]
    • Jump to our Gazetteer entry for Wildwood
    • Wildwood [Saint Louis County] lies 14 miles [22.5 km]<6> to the south of O'Fallon
    • Estimated population in 2019: 35,432 people
    • Note: The GPS coordinates that we are using for Wildwood have been provided by the GNIS.<2> The coordinates still need to be verified.
    • Jump to Google Maps centered on Wildwood
    • Jump to TripAdvisor's Tourism page for Wildwood<7>
  • Continue List   (6 more) ...
    • Ballwin [Saint Louis County]
      • Jump to our Gazetteer entry for Ballwin
      • Ballwin [Saint Louis County] lies 15 miles [24.1 km]<6> to the southeast of O'Fallon
      • Estimated population in 2019: 30,082 people
      • Note: The GPS coordinates that we are using for Ballwin have been provided by the GNIS.<2> The coordinates still need to be verified.
      • Jump to Google Maps centered on Ballwin
      • Jump to TripAdvisor's Tourism page for Ballwin<7>
    • Maryland Heights [Saint Louis County]
      • Jump to our Gazetteer entry for Maryland Heights
      • Maryland Heights [Saint Louis County] lies 13 miles [20.9 km]<6> to the east of O'Fallon
      • Estimated population in 2019: 26,956 people
      • Note: The GPS coordinates that we are using for Maryland Heights have been provided by the GNIS.<2> The coordinates still need to be verified.
      • Jump to Google Maps centered on Maryland Heights
    • Hazelwood [Saint Louis County]
      • Jump to our Gazetteer entry for Hazelwood
      • Hazelwood [Saint Louis County] lies 18 miles [29 km]<6> to the east of O'Fallon
      • Estimated population in 2019: 25,117 people
      • Jump to Google Maps centered on Hazelwood
      • Jump to TripAdvisor's Tourism page for Hazelwood<7>
    • Creve Coeur [Saint Louis County]
      • Jump to our Gazetteer entry for Creve Coeur
      • Creve Coeur [Saint Louis County] lies 17 miles [27.4 km]<6> to the southeast of O'Fallon
      • Estimated population in 2019: 18,622 people
      • Note: The GPS coordinates that we are using for Creve Coeur have been provided by the GNIS.<2> The coordinates still need to be verified.
      • Jump to Google Maps centered on Creve Coeur
    • Manchester [Saint Louis County]
      • Jump to our Gazetteer entry for Manchester
      • Manchester [Saint Louis County] lies 17 miles [27.4 km]<6> to the southeast of O'Fallon
      • Estimated population in 2019: 18,073 people
      • Note: The GPS coordinates that we are using for Manchester have been provided by the GNIS.<2> The coordinates still need to be verified.
      • Jump to Google Maps centered on Manchester
      • Jump to TripAdvisor's Tourism page for Manchester<7>
    • Overland [Saint Louis County]
      • Jump to our Gazetteer entry for Overland
      • Overland [Saint Louis County] lies 19 miles [30.6 km]<6> to the east of O'Fallon
      • Estimated population in 2019: 15,551 people
      • Note: The GPS coordinates that we are using for Overland have been provided by the GNIS.<2> The coordinates still need to be verified.
      • Jump to Google Maps centered on Overland

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 ...

Find a Community within Missouri

About Saint Charles County

About Missouri

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/

Footnotes ...

<1>If you're interested in how the shape of Missouri's counties, including Saint Charles, have changed over time, we recommend the Atlas of Historical County Boundaries.
<2>The location has been supplied by the Geographic Names Information System - which is maintained by the U.S. Geological Survey (USGS). While these values should be definitive, we have found that accuracy can vary and you should double-check the location if accuracy is required.
<3>Population counts have been provided by the U.S. Census Bureau. For more detail, please visit our Census Page for O'Fallon.
<4>The elevation is an estimate for the area around O'Fallon - it will be higher in some places and lower in others.
<5>ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as O'Fallon). When looking for a ZIP Code, whether O'Fallon or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<6>Our distances are not driving distances, but are calculated as a 'straight-line' distance. A straight line distance ignores obstructions like rivers, canyons, lakes, et cetera - it's truly a line from Point A (ie- O'Fallon) to Point B.

If you need the driving distance (or directions), we recommend that you use one of the Mapping Services listed on our Map Page for O'Fallon. Since we usually use Google Maps, we've provided the following link for your convenience: Google Map and Driving Directions starting from O'Fallon

Our distance measurements begin at a specific point in O'Fallon. The point we use is located at these GPS coordinates - Latitude: 38.7851, Longitude: -90.7169       In this case, the coordinates for O'Fallon have been provided by the Geographic Names Information System (GNIS).
<7>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.






















 

 

 

 

 


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This page was last modified: 11 May 2021