Tulsa is the second-largest city in the State of Oklahoma and 47th-largest city in the United States. As of July 2013 the population was 398,121, an increase of 6,215 over that reported in the 2010 Census. It is the principal municipality of the Tulsa Metropolitan Area, a region with 961,561 residents in the MSA and 1,131,458 in the CSA. The city serves as the county seat of Tulsa County, the most densely populated county in Oklahoma, and extends into Osage, Rogers, and Wagoner counties.

In the city proper, the age distribution was 24.8% of the population under the age of 18, 10.9% from 18 to 24, 29.9% from 25 to 44, 21.5% from 45 to 64, and 12.9% who were 65 years of age or older, while the median age was 34 years. For every 100 females there were 93.5 males, while for every 100 females over the age of 17 there were 90.4 males. In 2011, the median income for a household in the city was $40,268 and the median income for a family was $51,977. The per capita income for the city was $26,727. About 19.4% of the population were below the poverty line. Of the city’s population over the age of 25, 29.8% holds a bachelor’s degree or higher, and 86.5% have a high school diploma or equivalent.