Cahokia Mounds State Historic Site

Overview

The sprawling 2,200-acre Cahokia Mounds complex in Collinsville, Ill., is one of the most impressive Native American mound complexes in the country. While settlement in the area may date to roughly 1200 BC (during the Late Archaic period), the mounds as they are today were settled circa 600 AD (during the Late Woodland period). The mounds were probably built during the 9th century during the Emergent Mississippian culture. The settlement is the largest and most influential urban settlement of the Mississippian culture.

Quick Facts

Status

Existing

Locality or neighborhood

Collinsville

State or province

Illinois

Address

30 Ramey St., Collinsville, IL 62234

Postal code

62234