Baldwin is a town in Randolph County, Illinois, United States. The population was 373 at the 2010 census. Baldwin Lake State Fish and Wildlife Area is nearby.
Baldwin is located at 38°11′02″N 89°50′41″W.
According to the 2010 census, Baldwin has a total area of 0.67 square miles (1.74 km2), all land.
As of the census of 2010, there were 373 people, 146 households, and 101 families residing in the village. The population density was 533 people per square mile (206/km2). There were 161 housing units at an average density of 230 per square mile (80.5/km2). The racial makeup of the village was 97.9% White, 0.0% African American, 0.0% Native American, 0.3% Asian, 0.0% Pacific Islander, 0.0% some other race, and 1.9% from two or more races. Hispanic or Latino of any race were 1.3% of the population.
There were 146 households, out of which 28.1% had children under the age of 18 living with them, 47.9% were married couples living together, 13.7% had a female householder with no husband present, and 30.8% were non-families. 27.4% of all households were made up of individuals, and 6.9% had someone living alone who was 65 years of age or older. The average household size was 2.55 and the average family size was 3.06.
In the village, the population was spread out, with 24.7% under the age of 18, 9.7% from 18 to 24, 28.7% from 25 to 44, 26.1% from 45 to 64, and 11.0% who were 65 years of age or older.