Tulsa is Oklahoma’s second-largest city and the nation’s 48th, with 413,066 residents (2020) and a metro area of about 1.06 million. Settled between 1828 and 1836 by the Lochapoka band of Creek Native Americans and incorporated in 1898, most of Tulsa lies within Muscogee (Creek) Nation territory, with parts in the Osage and Cherokee nations. Long nicknamed the “Oil Capital of the World,” Tulsa’s economy has diversified beyond energy into finance, aviation, telecommunications, and technology.