Brookfield is a city in Linn County, Missouri, United States. The population was 4,542 at the 2010 census.
Brookfield is located at 39°46′59″N 93°4′26″W / 39.78306°N 93.07389°W / 39.78306; -93.07389 (39.783155, -93.073871). According to the United States Census Bureau, the city has a total area of 4.29 square miles (11.11 km), of which 4.27 square miles (11.06 km) is land and 0.02 square miles (0.05 km) is water.
As of the census of 2010, there were 4,542 people, 1,892 households, and 1,146 families residing in the city. The population density was 1,063.7 inhabitants per square mile (410.7/km). There were 2,280 housing units at an average density of 534.0 per square mile (206.2/km). The racial makeup of the city was 95.4% White, 1.3% African American, 0.3% Native American, 0.3% Asian, 0.6% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 2.0% of the population.
There were 1,892 households of which 30.8% had children under the age of 18 living with them, 43.3% were married couples living together, 12.5% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 39.4% were non-families. 34.5% of all households were made up of individuals and 16.4% had someone living alone who was 65 years of age or older. The average household size was 2.32 and the average family size was 2.96.
The median age in the city was 40.6 years. 25.8% of residents were under the age of 18; 7.1% were between the ages of 18 and 24; 21.6% were from 25 to 44; 25.1% were from 45 to 64; and 20.5% were 65 years of age or older. The gender makeup of the city was 45.9% male and 54.1% female.
As of the census of 2000, there were 4,769 people, 2,058 households, and 1,234 families residing in the city. The population density was 1,110.2 people per square mile (428.2/km²). There were 2,394 housing units at an average density of 557.3/sq mi (215.0/km²). The racial makeup of the city was 96.94% White, 1.26% African American, 0.36% Native American, 0.15% Asian, 0.13% from other races, and 1.17% from two or more races. Hispanic or Latino of any race were 0.94% of the population.
There were 2,058 households out of which 27.2% had children under the age of 18 living with them, 44.8% were married couples living together, 11.4% had a female householder with no husband present, and 40.0% were non-families. 35.3% of all households were made up of individuals and 20.7% had someone living alone who was 65 years of age or older. The average household size was 2.23 and the average family size was 2.86.
In the city, the population was spread out with 24.1% under the age of 18, 7.2% from 18 to 24, 23.1% from 25 to 44, 20.8% from 45 to 64, and 24.9% who were 65 years of age or older. The median age was 42 years. For every 100 females, there were 83.4 males. For every 100 females age 18 and over, there were 77.9 males.
The median income for a household in the city was $25,753, and the median income for a family was $32,385. Males had a median income of $23,284 versus $19,004 for females. The per capita income for the city was $14,842. About 14.7% of families and 19.1% of the population were below the poverty line, including 28.7% of those under age 18 and 14.8% of those age 65 or over.