Brookfield (formerly Grossdale) is a village in Cook County, Illinois, United States, located 13 miles (21 km) west of downtown Chicago. Its population was 18,978 at the 2010 census. The city is home to the Brookfield Zoo.
Brookfield is located at 41°49′22″N 87°50′51″W / 41.82278°N 87.84750°W / 41.82278; -87.84750 (41.822681, -87.847532).
According to the 2010 census, Brookfield has a total area of 3.067 square miles (7.94 km), of which 3.06 square miles (7.93 km) (or 99.77%) is land and 0.007 square miles (0.02 km) (or 0.23%) is water.
Most of Brookfield is flat land with various small hills and rises. Along Salt Creek is a steep ravine that is home to many oak savannas. These oak savannas are the primary ecosystem of Brookfield, and sprawl out from large, forested areas into small pockets in the village.
As of the census of 2000, there were 19,085 people, 7,536 households, and 5,034 families residing in the village. The population density was 6,252.4 people per square mile (2,416.0/km²). There were 7,753 housing units at an average density of 2,539.9 per square mile (981.5/km²). The racial makeup of the village was 93.53% White, 0.89% African American, 0.14% Native American, 1.24% Asian, 0.01% Pacific Islander, 2.88% from other races, and 1.31% from two or more races. Hispanic or Latino people of any race were 8.05% of the population.
The top five ancestries reported in Brookfield as of the 2000 census were German (23.2%), Irish (20.3%), Polish (18.0%), Italian (13.0%) and Czech (11.2%).
There were 7,536 households out of which 31.3% had children under the age of 18 living with them, 52.5% were married couples living together, 10.6% had a female householder with no husband present, and 33.2% were non-families. 27.8% of all households were made up of individuals and 11.4% had someone living alone who was 65 years of age or older. The average household size was 2.50 and the average family size was 3.10.
In the village, the population was spread out with 23.9% under the age of 18, 6.4% from 18 to 24, 32.3% from 25 to 44, 22.2% from 45 to 64, and 15.2% who were 65 years of age or older. The median age was 38 years. For every 100 females, there were 90.7 males. For every 100 females age 18 and over, there were 87.8 males.
The median income for a household in the village was $71,000, and the median income for a family was $64,075. Males had a median income of $45,293 versus $33,136 for females. The per capita income for the village was $24,307. About 2.3% of families and 4.3% of the population were below the poverty line, including 4.0% of those under age 18 and 6.4% of those age 65 or over.