Location within Linn County (left) and Missouri (right)
|• Total||4.29 sq mi (11.11 km2)|
|• Land||4.27 sq mi (11.06 km2)|
|• Water||0.02 sq mi (0.05 km2)|
|Elevation||761 ft (232 m)|
|• Estimate (2016)||4,303|
|• Density||1,100/sq mi (410/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|FIPS code||29-08650 |
|GNIS feature ID||0735530 |
Brookfield was surveyed in 1859 by John Wood Brooks, a native of Boston. John Wood Brooks is further remembered by the names of four Brookfield streets: John, Wood, Brooks, and Boston streets. A post office called Brookfield has been in operation since 1860.
Brookfield is located at  According to the United States Census Bureau, the city has a total area of 4.29 square miles (11.11 km2), of which 4.27 square miles (11.06 km2) is land and 0.02 square miles (0.05 km2) is water.(39.783155, -93.073871).
|U.S. Decennial Census|
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/km2). There were 2,280 housing units at an average density of 534.0 per square mile (206.2/km2). 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.
Every fall the Brookfield Bulldogs play the Marceline Tigers in the annual Bell Game which is one of the oldest high school football rivalries in the United States. The Bell Game won a USA Today national contest for the nations best football rivalry in 2012. The Bell Game rivalry received 1,761,878 votes and won a $10,000 prize divided equally between Brookfield and Marceline.
Every year Brookfield hosts Summer Fun Days, a festival that takes place in the uptown Main Street area. Summer Fun Days marks the start of summer for families in and around Brookfield, with activities including a parade, craft fair, baby contest, games, and other family
- KFMZ 1470, AM
- KZBK 96.9, FM
- Doris Akers, gospel singer and composer, was born in Brookfield and resided there until age five.
- Jeff Roe, Republican political consultant, was born in Brookfield and lived there until joining the Army at age sixteen.
- Punk rock band All lived in Brookfield from 1990–94, when they released their albums Percolater (1992) and Breaking Things (1993).
- "US Gazetteer files 2010". United States Census Bureau. Archived from the original on 2012-01-24. Retrieved 2012-07-08.
- "American FactFinder". United States Census Bureau. Retrieved 2012-07-08.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2008-01-31.
- "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
- Eaton, David Wolfe (1916). How Missouri Counties, Towns and Streams Were Named. The State Historical Society of Missouri. p. 187.
- "Post Offices". Jim Forte Postal History. Retrieved 29 October 2016.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- U.S. Decennial Census; census.gov Archived 2015-05-12 at WebCite
- "VOTE FOR THE BEST RIVALRY IN THE NATION". USA Today.