According to the 2021 census gazetteer files, McCook has a total area of 2.64 square miles (6.84 km2), of which 2.61 square miles (6.76 km2) (or 99.20%) is land and 0.02 square miles (0.05 km2) (or 0.80%) is water.[3]
McCook is home to a small population but a large amount of heavy industry, resulting in a large tax base.
As of the 2020 census[5] there were 249 people, 107 households, and 87 families residing in the village. The population density was 94.50 inhabitants per square mile (36.49/km2). There were 113 housing units at an average density of 42.88 per square mile (16.56/km2). The racial makeup of the village was 64.26% White, 1.20% Asian, 10.44% from other races, and 24.10% from two or more races. Hispanic or Latino of any race were 36.55% of the population.
There were 107 households, out of which 41.1% had children under the age of 18 living with them, 50.47% were married couples living together, 22.43% had a female householder with no husband present, and 18.69% were non-families. 16.82% of all households were made up of individuals, and 11.21% had someone living alone who was 65 years of age or older. The average household size was 3.18 and the average family size was 2.96.
The village's age distribution consisted of 24.9% under the age of 18, 13.6% from 18 to 24, 21.7% from 25 to 44, 17% from 45 to 64, and 22.7% who were 65 years of age or older. The median age was 31.4 years. For every 100 females, there were 108.6 males. For every 100 females age 18 and over, there were 101.7 males.
The median income for a household in the village was $75,417, and the median income for a family was $65,417. Males had a median income of $50,714 versus $33,750 for females. The per capita income for the village was $28,757. About 3.4% of families and 5.0% of the population were below the poverty line, including 3.8% of those under age 18 and 5.6% of those age 65 or over.
McCook village, Illinois – Demographic Profile (NH = Non-Hispanic)
McCook is home to a large amount of heavy industry, including portions of Vulcan Materials Company McCook Quarry, UOP, and the Electro-Motive Diesel (EMD) railroad locomotive plant. Known as the LaGrange plant for its mailing address (McCook does not have its own post office), EMD produced most of their locomotives there from 1935 to 1991, when parent company General Motors moved all final-assembly operations to London, Ontario. The LaGrange plant continues to manufacture locomotive parts and engines, and also serves as the EMD U.S. headquarters.
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