Sandy Oaks is a city in Bexar County, Texas, United States. Its population was 5,075 as of the 2020 census. The community voted to incorporate in an election held on May 14, 2014. A total of 128 votes were cast in the election, 96 (75%) in favor of incorporation and 32 (25%) against.
Sandy Oaks is located along Interstate 37 at the intersection of Priest and Mathis roads in southeastern Bexar County. The city covers a total of 2.38 square miles, all land.
As of the 2020 census, Sandy Oaks had a population of 5,075. The median age was 32.5 years. 30.9% of residents were under the age of 18 and 9.1% of residents were 65 years of age or older. For every 100 females there were 97.7 males, and for every 100 females age 18 and over there were 102.0 males age 18 and over.
The 2020 census reported that 0.0% of residents lived in urban areas, while 100.0% lived in rural areas.
There were 1,462 households in Sandy Oaks, of which 49.2% had children under the age of 18 living in them. Of all households, 56.0% were married-couple households, 17.3% were households with a male householder and no spouse or partner present, and 18.5% were households with a female householder and no spouse or partner present. About 15.2% of all households were made up of individuals and 5.2% had someone living alone who was 65 years of age or older.
There were 1,559 housing units, of which 6.2% were vacant. The homeowner vacancy rate was 2.0% and the rental vacancy rate was 5.3%.
The city of Sandy Oaks is served by the Southside Independent School District.