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. It is known as the "Hobo capital of Texas."
Kirby is located at 29°27′40″N 98°23′20″W (29.461032, -98.388763).
According to the United States Census Bureau, the city has a total area of 1.9 square miles (4.9 km2), of which, 1.9 square miles (4.9 km2) of it is land and 0.04 square miles (0.10 km2) 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.