HOUSTON (KTRK) -- When you think of jobs in the city of Houston, oil and gas might be the first things to come to mind.
You might, however, be surprised to learn that energy firms aren't the city's largest employers -- in fact, only one energy company holds a spot in the city's top five largest employers.
Take a look through the photo gallery above to explore some of Houston's largest employers.
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Memorial Hermann, MD Anderson, United Airlines, Houston Methodist and Kroger round out the city's top five employers.
Take a look at Houston's biggest employers
The Memorial Hermann Hospital System is the area's largest employer, wit hover 24,000 Houstonians on its payroll. (AP Photo/Pat Sullivan)