Pesotum is a village in Champaign County, Illinois, United States. The population was 551 at the 2010 census.
The village was named after Pesotum, a Native American warrior in the Battle of Fort Dearborn.
Pesotum is located at 39°54′50″N 88°16′26″W.
According to the 2010 census, Pesotum has a total area of 0.598 square miles (1.55 km2), of which 0.59 square miles (1.53 km2) (or 98.66%) is land and 0.008 square miles (0.02 km2) (or 1.34%) is water.
At the 2000 census there were 521 people, 218 households, and 153 families living in the village. The population density was 938.0 people per square mile (359.2/km²). There were 221 housing units at an average density of 397.9 per square mile (152.4/km²). The racial makeup of the village was 99.04% White, 0.38% Asian, and 0.58% from two or more races. Hispanic or Latino of any race were 0.19%. Of the 218 households 31.2% had children under the age of 18 living with them, 60.1% were married couples living together, 6.0% had a female householder with no husband present, and 29.8% were non-families. 26.6% of households were one person and 18.3% were one person aged 65 or older. The average household size was 2.39 and the average family size was 2.87.