The fourth-largest American city, Houston, TX is located in Harris County and covers 579.4 square miles. As of July 2009, 2,257,926 lived there. This marks a population increase of 15.6% since 2000. Of those residents, 19.5% lived in poverty. There is a nearly even balance between males and females in the city. 42.7% of the population is Hispanic, with the other majority balancing between White and Black. Just 5.4% are Asian.

The median age of a Houston resident is 30.9 years, slightly younger than that of the state of Texas. The state's largest city, Houston boasts many zip codes including: 77001, 77002, 77003, 77004 and 77005. The median income per household is $44,315 Renters pay a gross average of $775 per month in rent.

Houston, Texas is home to an impressive array of hospitals including the Menninger Clinic and The Institute for Rehabilitation & Research. The city also houses the Texas Medical Center, the largest medical complex in the world. The facility boasts 13 hospitals, including Texas Children's Hospital and the M.D. Anderson Cancer Center. Known for its innovation in medicine, the city hosts patients from all over the world. Countless disciplines are represented, including ear, nose and throat, neurologists, plastic surgeons and cardiologists.