|Nearest city||Lewistown, Illinois|
|Area||70 acres (28 ha)|
|NRHP reference No.||78001145|
|Added to NRHP||November 21, 1978|
The Larson Site is a prehistoric archaeological site in Fulton County, Illinois, near the city of Lewistown. The site was the location of a Mississippian town and was occupied during the 13th and 14th centuries. The town was one of seven major town sites in the central Illinois River valley and served as a social and economic center for surrounding villages and farms. The artifacts uncovered at the site have been well-preserved and include both organic remains and intact homes, providing significant archaeological evidence regarding the Mississippian way of life.