Geography
Calumet City is located at 41°36′51″N, 87°32′47″W (41.614188, -87.546389)[1].
According to the United States Census Bureau, the city has a total area of 7.4 square miles (19.1 km²), of which, 7.3 square miles (18.8 km²) of it is land and 0.1 square miles (0.3 km²) of it (1.63%) is water.

Demographics
As of the 2000 census,[2] there were 39,071 people, 15,139 households, and 10,006 families residing in the city. The population density was 5,378.0 people per square mile (2,077.9/km²). There were 15,947 housing units at an average density of 2,195.1/sq mi (848.1/km²). The racial makeup of the city was 38.74% White, 52.91% African American, 0.25% Native American, 0.53% Asian, 0.05% Pacific Islander, 5.37% from other races, and 2.15% from two or more races. Hispanic or Latino of any race were 10.86% of the population, including 9.4% of Mexican descent.
The top four non-African American, non-Hispanic ancentries reported in Calumet City as of the 2000 census were Polish (12.7%), German (6.5%), Irish (5.1%) and Italian (3.8%).[3]
There were 15,139 households out of which 34.6% had children under the age of 18 living with them, 38.3% were married couples living together, 22.4% had a female householder with no husband present, and 33.9% were non-families. 29.8% of all households were made up of individuals and 11.5% had someone living alone who was 65 years of age or older. The average household size was 2.58 and the average family size was 3.21.
In the city, the age distribution of the population was 28.7% under the age of 18, 8.6% from 18 to 24, 30.7% from 25 to 44, 19.2% from 45 to 64, and 12.7% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 86.8 males. For every 100 females age 18 and over, there were 80.4 males.
The median income for a household in the city was $38,902, and the median income for a family was $45,998. Males had a median income of $37,231 versus $30,555 for females. The per capita income for the city was $18,123. About 9.8% of families and 12.2% of the population were below the poverty line, including 17.3% of those under age 18 and 7.2% of those age 65 or over.