Downtown Austin is located in the heart of the city and spans right from the State Capitol down to Oltorf . Downtown real estate is incredible and the closer in to the Capitol and 78701 you are, the more high rise living you see. There are capillaries of single family homes in the mix, especially as you travel south along Congress into Travis Heights. This map gives an idea of the area from downtown which is bordered by IH 35 on the East and Oltorf on the South. As you move west, the landscape mingles into Central Austin.