Scenic Oaks is located in northern Bexar County. It is bordered by Interstate 10 to the east, by the city of San Antonio to the southeast, by the CDP of Cross Mountain to the south, and to the north by Balcones Creek, forming the border with Kendall County. A portion of the CDP is taken up by the gated community of Scenic Oaks. Via Interstate 10 it is 25 miles (40 km) south to downtown San Antonio and 8 miles (13 km) northwest to Boerne.
According to the United States Census Bureau, the Scenic Oaks CDP has a total area of 7.9 square miles (20.4 km2), of which 0.019 square miles (0.05 km2), or 0.24%, is water.
As of the 2000 census, there were 3,279 people, 1,190 households, and 996 families residing in the CDP. The population density was 393.7 people per square mile (152.0/km²). There were 1,226 housing units at an average density of 147.2/sq mi (56.8/km²). The racial makeup of the CDP was 93.69% White, 0.18% African American, 0.34% Native American, 0.95% Asian, 3.42% from other races, and 1.43% from two or more races. Hispanic or Latino of any race were 14.97% of the population.
There were 1,190 households out of which 36.6% had children under the age of 18 living with them, 75.7% were married couples living together, 5.8% had a female householder with no husband present, and 16.3% were non-families. 14.5% of all households were made up of individuals and 4.8% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.05.
In the CDP, the population was spread out with 25.8% under the age of 18, 4.8% from 18 to 24, 24.0% from 25 to 44, 35.2% from 45 to 64, and 10.1% who were 65 years of age or older. The median age was 43 years. For every 100 females there were 97.1 males. For every 100 females age 18 and over, there were 94.0 males.