Welcome to Cahokia ...

The village of Cahokia is located in Saint Clair County<1>.

The pronunciation of Cahokia: kuh-HOH-kee-uh<2>

While we don't have a date for the founding of Cahokia, you might consider that their post office opened  in 1803.

From the  Census Estimates for 2019, Cahokia has a population of 13,889 people<3> (see below for details).

Cahokia is 410 feet [125 m] above sea level.<4>.

Time Zone: Cahokia lies in the Central Time Zone (CST/CDT) and observes daylight saving time

The area code for Cahokia: (618)

Population Details ...

Taken from the 2019 Census Estimates, Cahokia had an population of 13,889 people. This is a decrease of 8.87% since the 2010 Census (or a decrease of 15.26% since the 2000 Census).

At the time of the 2010 Census, Cahokia had a population of 15,241 people (which is 5.64% of the total population of Saint Clair County). This makes Cahokia the county's 5th most populous community.

The population of Cahokia represents 0.12% of the total population of Illinois (which has 12,830,632 people), making it the state's 163rd most populous community.

With a 2010 count of 15,241 people, the population of Cahokia decreased 7.02% from the 2000 Census (which had a count of 16,391 people).

More information can be found on the Census Page for Cahokia.

Communities near Cahokia ...

We have created a list of 10 communities that are near Cahokia.

• Florissant
  (16 miles [25.7 km] to the northwest)
  • Jump to our Gazetteer entry for Florissant
  • Florissant is located in Saint Louis County (MO)
  • Population from the 2020 Census: 50,795 people
• Belleville
  (11 miles [17.7 km] to the east)
  • Jump to our Gazetteer entry for Belleville
  • Belleville is located in Saint Clair County
  • Population from the 2020 Census: 40,536 people
  • Jump to TripAdvisor's Tourism page for Belleville <5>
• University City
  (10 miles [16.1 km] to the northwest)
  • Jump to our Gazetteer entry for University City
  • University City is located in Saint Louis City (MO)
  • Population from the 2020 Census: 34,049 people
• Ballwin
  (19 miles [30.6 km] to the west)
  • Note: The GPS coordinates that we are using for Ballwin have been provided by the GNIS.<6> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Ballwin
  • Ballwin is located in Saint Louis County (MO)
  • Population from the 2020 Census: 30,094 people
  • Jump to TripAdvisor's Tourism page for Ballwin <5>
• O'Fallon
  (15 miles [24.1 km] to the east)
  • Jump to our Gazetteer entry for O'Fallon
  • O'Fallon is located in Saint Clair County
  • Population from the 2020 Census: 29,606 people
  • Jump to TripAdvisor's Tourism page for O'Fallon <5>
• Granite City
  (9 miles [14.5 km] to the north)
  • Jump to our Gazetteer entry for Granite City
  • Granite City is located in Madison County
  • Population from the 2020 Census: 27,959 people
  • Jump to TripAdvisor's Tourism page for Granite City <5>
• Kirkwood
  (11 miles [17.7 km] to the west)
  • Jump to our Gazetteer entry for Kirkwood
  • Kirkwood is located in Saint Louis County (MO)
  • Population from the 2020 Census: 27,866 people
• Maryland Heights
  (18 miles [29 km] to the northwest)
  • Note: The GPS coordinates that we are using for Maryland Heights have been provided by the GNIS.<6> The coordinates still need to be verified.
  • Jump to our Gazetteer entry for Maryland Heights
  • Maryland Heights is located in Saint Louis County (MO)
  • Population from the 2020 Census: 26,895 people
• Hazelwood
  (17 miles [27.4 km] to the northwest)
  • Jump to our Gazetteer entry for Hazelwood
  • Hazelwood is located in Saint Louis County (MO)
  • Population from the 2020 Census: 25,042 people
  • Jump to TripAdvisor's Tourism page for Hazelwood <5>
• Collinsville
  (12 miles [19.3 km] to the northeast)
  • Jump to our Gazetteer entry for Collinsville
  • Collinsville is located in Madison County
  • Population from the 2020 Census: 24,217 people
  • Jump to TripAdvisor's Tourism page for Collinsville <5>

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 Cahokia. Our list includes the location of those cemeteries and we provide an overhead view. See our Cemetery List for Cahokia.

Using the information from an 1895 Atlas, we've created a list of communities that were in the area of Cahokia. 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 Cahokia.

We also have a detailed list of newspapers that have been published in the area around Cahokia. See our Newspapers Page for Cahokia.

TripAdvisor Tourism Pages for Cahokia ...

Looking for more information about Cahokia? 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 Cahokia, there are neighboring communities that also have Tourism pages. More information about those communities can be found on our TripAdvisor Page for Cahokia.

Adding Cahokia to Our Gazetteer ...

We originally found mention of Cahokia in both the FIPS-55 and the GNIS. For more information, see the FIPS and GNIS Codes sections on our Miscellaneous Page.

From our notes, the earliest published mention we've found for Cahokia was in the book titled U.S. Post Offices (1803).

We also found Cahokia in the book titled U.S. Post Offices (Oct. 1846).

For more details, see References and Mentions for Cahokia.

Off-the-Road Links ...

Unfortunately, we don't know of a website for Cahokia. If you can help, please contact us through our Feedback Page.

The official website for Saint Clair County: www.co.st-clair.il.us/

The official website for State of Illinois: https://illinois.gov