Brookshire is located at 29°47?1?N 95°57?16?W (29.783737, -95.954325)., 34 miles west of downtown Houston along Interstate 10, 7 miles west of Katy. It is part of the Interstate 10 Energy Corridor, part of the west Houston and Katy market, and a member of West I-10 Chamber of Commerce. The population was 4,702 as of the 2010 census, with a total area of 3.5 square miles (9.1 km²). The city is named for Nathan Brookshire, a large land owner in the vicinity. He was a captain in the Texian Army and participated in the storming and capture of Bexar in 1835. In 1893, John Kellner donated land and filed a plat for the Town of Kellner out of the William Cooper Survey, one of the oldest headrights in the state. Also in 1893, John Brookshire and O. C. Drew filed their plat for the Town of Brookshire out of the H. H. Pennington Survey. On May 24, 1946, the City of Brookshire was incorporated, comprising both the Kellner and the Brookshire/Drew plats.
As of the 2010 U.S. Census, the population of Brookshire was 4,702, a 36% increase since the 2000 census. As of the census of 2000, 3,450 people, 1,138 households, and 823 families resided in the city. The population density was 983.2 people per square mile (379.5/km2). The 1,257 housing units averaged 358.2 per square mile (138.3/km2). The racial makeup of the city was 32.67% White, 38.20% African American, 0.58% Native American, 0.38% Asian, 0.03% Pacific Islander, 26.09% from other races, and 2.06% from two or more races. Hispanics or Latinos of any race were 37.16% of the population.
Of the 1,138 households, 40.2% had children under the age of 18 living with them, 44.5% were married couples living together, 21.2% had a female householder with no husband present, and 27.6% were not families; 23.6% of all households were made up of individuals, and 8.7% had someone living alone who was 65 years of age or older. The average household size was 3.03 and the average family size was 3.56.
In the city, the population was distributed as 32.4% under the age of 18, 11.7% from 18 to 24, 30.6% from 25 to 44, 17.3% from 45 to 64, and 8.0% who were 65 years of age or older. The median age was 28 years. For every 100 females, there were 97.3 males. For every 100 females age 18 and over, there were 92.7 males. The median income for a household in the city was $29,461, and for a family was $32,017. Males had a median income of $25,032 versus $18,674 for females. The per capita income for the city was $12,235. About 14.5% of families and 18.7% of the population were below the poverty line, including 24.1% of those under age 18 and 8.1% of those age 65 or over.