Le Roy (also styled “LeRoy”) is a city in McLean County, Illinois, United States. The population was 3,560 at the 2010 census.
Le Roy is located at 40°20′50″N 88°45′44″W / 40.34722°N 88.76222°W / 40.34722; -88.76222 (40.347168, -88.762293).
According to the 2010 census, Le Roy has a total area of 2.336 square miles (6.05 km), of which 2.32 square miles (6.01 km) (or 99.32%) is land and 0.016 square miles (0.04 km) (or 0.68%) is water.
As of the census of 2000, there were 3,332 people, 1,300 households, and 920 families residing in the city. The population density was 1,500.3 people per square mile (579.5/km²). There were 1,367 housing units at an average density of 615.5 per square mile (237.7/km²). The racial makeup of the city was 99.25% White, 0.06% African American, 0.12% Native American, 0.09% Asian, 0.27% from other races, and 0.21% from two or more races. Hispanic or Latino of any race were 1.20% of the population.
There were 1,300 households out of which 36.6% had children under the age of 18 living with them, 59.7% were married couples living together, 8.2% had a female householder with no husband present, and 29.2% were non-families. 25.6% of all households were made up of individuals and 12.5% had someone living alone who was 65 years of age or older. The average household size was 2.51 and the average family size was 3.03.
In the city, the population was spread out with 27.2% under the age of 18, 6.4% from 18 to 24, 31.2% from 25 to 44, 19.7% from 45 to 64, and 15.5% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 91.6 males. For every 100 females age 18 and over, there were 87.0 males.
The median income for a household in the city was $45,781, and the median income for a family was $53,986. Males had a median income of $35,784 versus $27,450 for females. The per capita income for the city was $20,743. About 0.6% of families and 1.9% of the population were below the poverty line, including 2.0% of those under age 18 and 3.0% of those age 65 or over.