Donovan is a village in Beaver Township, Iroquois County, Illinois, United States. The population was 304 at the 2010 census.
Donovan was laid out in 1872 and named for the local Donovan family.
Donovan is located in northeastern Iroquois County at 40°53′3″N 87°36′57″W (40.884031, -87.615746). U.S. Route 52 passes through the village, leading west and north 30 miles (48 km) to Kankakee and southeast 14 miles (23 km) to Kentland, Indiana.
According to the 2010 census, Donovan has a total area of 0.31 square miles (0.80 km2), all land.
As of the census of 2000, there were 351 people, 132 households, and 97 families residing in the village. The population density was 1,127.4 people per square mile (437.2/km2). There were 142 housing units at an average density of 456.1 per square mile (176.9/km2). The racial makeup of the village was 96.30% White, 0.85% African American, 0.85% Native American, 1.42% from other races, and 0.57% from two or more races. Hispanic or Latino of any race were 5.13% of the population.
There were 132 households, out of which 37.9% had children under the age of 18 living with them, 56.1% were married couples living together, 12.9% had a female householder with no husband present, and 26.5% were non-families. 24.2% of all households were made up of individuals, and 15.2% had someone living alone who was 65 years of age or older.