Alamo Heights is about 5 miles (8 km) north of downtown San Antonio, the urban core of the seventh-largest city in America, and is almost completely surrounded by the city of San Antonio.

All of them are districts within San Antonio except for Terrell Hills and Olmos Park, both independent municipalities similarly to Alamo Heights.

Alamo Heights is approximately 3 miles (5 km) south of the San Antonio International Airport and 5 miles (8 km) north of downtown San Antonio, both of which are accessible via Broadway and U.S. 281 North.

According to the United States Census Bureau, Alamo Heights has a total area of 1.9 square miles (4.8 km2), all land.

[5] As of the 2020 United States census, there were 7,357 people, 3,223 households, and 2,158 families residing in the city.

38.3% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older.

The United States Postal Service operates the Alamo Heights Post Office.

[12][20] Trinity University is 1 mile (1.6 km) southwest of the city limits in the San Antonio district of Monte Vista.

[21] The Alamo Quarry Market shopping center, Quarry Village, Lincoln Heights Shopping Center, H-E-B's Central Market, North Star Mall, McNay Art Museum, and the headquarters for Clear Channel Communications can be found outside Alamo Heights.