San Antonio has a strong and stable economy, as it has since its early days. The city ranks fourth economically among Texas metropolitan areas, and 38th in the whole nation. The economy of San Antonio is strengthened by the military, healthcare, government services, financial services, oil and gas, and tourism attractions. San Antonio is also known for their high number of call centers and automobile manufacturers. San Antonio is home to one of the largest military concentrations and defense industries in the country. The South Texas Medical Center is also beneficial for the economy; the center is home to many hospitals, clinics, research centers, and higher education institutes.
The tourism of San Antonio is always rising, helping the city maintain its economic status. Over 20 million people visit the city every year, largely due to the historic Alamo and River Walk. The Henry B. Gonzalez Convention Center is also a very popular place to host major events for corporations throughout the country.
San Antonio has six Fortune 500 companies, as well as other huge companies with headquarters based out of the city. A few of the corporations with headquarters in San Antonio are Valero Energy Corp, Frost Bank, NewTek, Taco Cabana, and the USAA.