Killen is a very small town located in the state of Alabama. With a population of 1,040 people and four associated neighborhoods, Killen is the 294th largest community in Alabama.

Killen real estate is some of the most expensive in Alabama, although Killen house values don't compare to the most expensive real estate in the U.S.

Killen is a small town, and as such doesn't have a public transit system that people use to get to and from their jobs every day.

The education level of Killen citizens, measured as those with bachelor's degrees or advanced degrees, is similar to the national average for all American cities and towns. 20.13% of adults 25 and older in Killen have a college degree.

The per capita income in Killen in 2022 was $32,990, which is upper middle income relative to Alabama, and middle income relative to the rest of the US. This equates to an annual income of $131,960 for a family of four. However, Killen contains both very wealthy and poor people as well.

The people who call Killen home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Killen residents report their race to be White, followed by Black or African-American. Important ancestries of people in Killen include English, German, Irish, Italian, and Scots-Irish.

The most common language spoken in Killen is English. Other important languages spoken here include Spanish and Persian.