Live Oak is a city in Bexar County, Texas, United States. The population was 13,131 at the 2010 census. It is part of the San Antonio Metropolitan Statistical Area.
According to the United States Census Bureau, Live Oak has a total area of 4.7 square miles (12 km2), of which, 4.7 square miles (12 km2) of it is land and 0.04 square miles (0.10 km2) of it (0.64%) is water.
At the 2000 census there were 9,156 people in 3,429 households, including 2,592 families, in the city. The population density was 1,956.7 people per square mile (755.4/km2). There were 3,518 housing units at an average density of 751.8 per square mile (290.2/km2). The racial makeup of the city was 78.20% White, 8.44% African American, 0.78% Native American, 2.53% Asian, 0.15% Pacific Islander, 6.28% from other races, and 3.62% from two or more races. Hispanic or Latino of any race were 26.97%.
Of the 3,429 households 35.4% had children under the age of 18 living with them, 59.5% were married couples living together, 12.2% had a female householder with no husband present, and 24.4% were non-families. 19.7% of households were one person and 4.3% were one person aged 65 or older.