Kirby is a city in Bexar County, Texas, United States. It is an enclave of San Antonio and is part of the San Antonio Metropolitan Statistical Area. Founded as an agricultural settlement along the Southern Pacific railroad, the city was transformed into a suburban community upon its incorporation in 1955. The population of 8,000 (2010 census) is made up of diverse individuals with numerous backgrounds. African Americans, German, and Hispanic elements have all affected the overall culture of the city.
Kirby is located at 29°27′40″N 98°23′20″W / 29.46111°N 98.38889°W / 29.46111; -98.38889 (29.461032, -98.388763).
According to the United States Census Bureau, the city has a total area of 1.9 square miles (4.9 km), of which, 1.9 square miles (4.9 km) of it is land and 0.04 square miles (0.10 km) of it (1.58%) is water.
As of the census of 2000, there were 8,673 people, 2,975 households, and 2,317 families residing in the city. The population density was 4,641.1 people per square mile (1,790.7/km²). There were 3,137 housing units at an average density of 1,678.7/sq mi (647.7/km²). The racial makeup of the city was 64.27% White, 14.56% African American, 0.53% Native American, 2.06% Asian, 0.14% Pacific Islander, 14.83% from other races, and 3.61% from two or more races. Hispanic or Latino of any race were 41.69% of the population.
There were 2,975 households out of which 39.2% had children under the age of 18 living with them, 54.1% were married couples living together, 18.4% had a female householder with no husband present, and 22.1% were non-families. 18.1% of all households were made up of individuals and 5.9% had someone living alone who was 65 years of age or older. The average household size was 2.92 and the average family size was 3.29.
In the city, the population was spread out with 30.3% under the age of 18, 8.9% from 18 to 24, 29.2% from 25 to 44, 22.6% from 45 to 64, and 9.1% who were 65 years of age or older. The median age was 33 years. For every 100 females, there were 95.7 males. For every 100 females age 18 and over, there were 89.3 males.
The median income for a household in the city was $38,919, and the median income for a family was $42,329. Males had a median income of $28,699 versus $22,086 for females. The per capita income for the city was $15,615. About 8.9% of families and 11.0% of the population were below the poverty line, including 18.1% of those under age 18 and 7.0% of those age 65 or over.