Killeen is located in Bell County, Texas. According to the 2010 census the population of Killeen is 127,921 making it the twenty-first most populous city in the state of Texas. It is the “principal city” of the Killeen–Temple–Fort Hood Metropolitan Statistical Area.
Killeen is directly adjacent to the main cantonment of Fort Hood, and as such its economy heavily depends on the post and the soldiers (and their families) stationed there.
The median income for a household in the city was $44,370, and the median income for a family was $36,674. The per capita income for the city was $20,095, compared to the national per capita of $39,997. About 11.2% of families and 16.4% of the population were below the poverty line, including 18.5% of those under age 18 and 8.6% of those age 65 or over.
In 2007, Coldwell Banker ranked Killeen, Texas as the most affordable housing market in the United States with an average cost of $136,725.