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National Register of Historic Places

Cahokia Mounds

Cahokia Mounds is a historic place in Collinsville, St. Clair County, Illinois, listed on the United States National Register of Historic Places on October 15, 1966, and designated a National Historic Landmark. Its National Register reference number is 66000899.

Collinsville, St. Clair County, IllinoisListed October 15, 1966NRIS #66000899★ National Historic Landmark
Photograph of Cahokia Mounds
Photo: Cahokia Mounds via Wikimedia Commons — see the file page for author and license. Image source
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Location 01

Cahokia Mounds

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About this place

What is Cahokia Mounds?

The Cahokia Mounds is the site of a Native American city directly across the Mississippi River from present-day St. Louis. The state archaeology park lies in south-western Illinois between East St. Louis and Collinsville. The park covers 2,200 acres (890 ha), or about 3.5 square miles (9 km2), and contains about 80 manmade mounds, but the ancient city was much larger. At its apex around 1100 AD, the city covered about 6 square miles (16 km2), included about 120 earthworks in a wide range of sizes, shapes, and functions, and had a population of between 15,000 and 20,000 people.

Source: Wikipedia, text available under CC BY-SA 4.0.

The record

Listing details

Name
Cahokia Mounds
City
Collinsville
County
St. Clair County
State
Illinois
Listed on the National Register
October 15, 1966
NRIS reference number
66000899
Resource type
site
National Historic Landmark
Yes
Coordinates
38.65362, -90.07132
When was Cahokia Mounds listed on the National Register?

Cahokia Mounds was added to the National Register of Historic Places on October 15, 1966.

Where is Cahokia Mounds located?

Cahokia Mounds is located in Collinsville, St. Clair County, Illinois at approximately 38.65362, -90.07132. See the map above.

Is Cahokia Mounds a National Historic Landmark?

Yes. Cahokia Mounds is designated a National Historic Landmark, the highest federal recognition for a historic place.

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