Divernon is a village in Sangamon County, Illinois, United States. The population was 1,172 at the 2010 census, and 1,119 at a 2018 estimate. It is part of the Springfield, Illinois Metropolitan Statistical Area.
A post office has been in operation at Divernon since 1887. The village took its name after Di Vernon, a character in the novel Rob Roy.
Divernon is located at 39°33′58″N 89°39′21″W (39.566208, -89.655718).
According to the 2010 census, the village has a total area of 0.79 square miles (2.0 km2), all land.
As of the census of 2000, there were 1,201 people, 480 households, and 340 families residing in the village. The population density was 1,507.3 people per square mile (579.6/km2). There were 516 housing units at an average density of 647.6 per square mile (249.0/km2). The racial makeup of the village was 98.67% White, 0.33% African American, 0.25% Asian, 0.17% from other races, and 0.58% from two or more races. Hispanic or Latino of any race were 1.42% of the population.
There were 480 households out of which 35.2% had children under the age of 18 living with them, 56.9% were married couples living together, 9.4% had a female householder with no husband present, and 29.0% were non-families.