Dallas is the third-largest city in the state and the ninth-largest city in the US with an estimated population of 1.3 million as of 2008. Dallas is home to America's largest companies including Centex, Texas Instruments, Celanese and Southwest Airlines. State Farm Mutual Auto Insurance, Chase Bank and Allstate Insurance are some of the leading financial institutions operating in the area. The average home is worth $178,000 and the rent is $960 per month. The average household brings in $48,048 a year.