In the not-too-distant future, Houston, TX, is poised to overtake Chicago, IL, as the third largest city in the U.S. Houston’s population growth is thanks in large part to its quality of life.

Houston earns 11th place on LawnStarter’s 2015 Quality of Life Index for America’s largest cities.

The index is based on six quality-of-life factors analyzed by LawnStarter and borrowed from The Economist -- GDP (economic output) per capita, average life expectancy, divorce rate, unemployment rate, geographic location (latitude) and male-female income equality. The Economist considers these factors to be good barometers for quality of life.

In Houston’s favor on the index are GDP per capita and geographic location.

“Houston is a city of endless possibilities,” the Greater Houston Partnership says. “Our history has been marked with achievements like the first word heard from the moon and the first artificial heart transplant. Nationally recognized parks, professional sports, fine dining, and other attractions make Houston a great place to call home.”