Oak Brook’s location is in the North Austin/Round Rock area. Though Oak Brook is in the North Austin zip code, it is only 3 miles west of Round Rock and falls under the Fern Bluff MUD and Round Rock Independent School District.
The main entrance to Oak Brook neighborhood is located on the corner of Avery Ranch Blvd and O’Connor Dr. The neighborhood stretches across Avery Ranch Blvd on Morgan Hill Trail and extends the other direction until Cypress Landing Cove. The Oak Brook Glen begins where Hillside Dr meets Sutter Creek Trail.