Steward is a village in Lee County, Illinois, United States. The population was 256 at the 2010 census, down from 271 in 2000.
According to the 2010 census, Steward has a total area of 0.2 square miles (0.52 km), all land.
As of the census of 2000, there were 271 people, 99 households, and 79 families residing in the village. The population density was 2,180.9 people per square mile (871.9/km²). There were 103 housing units at an average density of 828.9 per square mile (331.4/km²). The racial makeup of the village was 98.52% White, 0.37% African American, 0.74% from other races, and 0.37% from two or more races. Hispanic or Latino of any race were 4.06% of the population.
There were 99 households out of which 34.3% had children under the age of 18 living with them, 66.7% were married couples living together, 11.1% had a female householder with no husband present, and 20.2% were non-families. 18.2% of all households were made up of individuals and 8.1% had someone living alone who was 65 years of age or older. The average household size was 2.74 and the average family size was 3.06.
In the village, the population was spread out with 28.8% under the age of 18, 5.9% from 18 to 24, 30.6% from 25 to 44, 21.0% from 45 to 64, and 13.7% who were 65 years of age or older. The median age was 35 years. For every 100 females, there were 115.1 males. For every 100 females age 18 and over, there were 103.2 males.
The median income for a household in the village was $46,071, and the median income for a family was $51,500. Males had a median income of $35,469 versus $25,625 for females. The per capita income for the village was $16,270. About 2.5% of families and 4.5% of the population were below the poverty line, including 4.8% of those under the age of eighteen and 4.5% of those sixty five or over.