The Defenders were a professional indoor football team based in a city which as of 2015 has a population of what?
Oklahoma Defenders: The Oklahoma Defenders were a professional indoor football team and a charter member of the Champions Professional Indoor Football League (CPIFL). Oklahoma Defenders:  Based in Tulsa, Oklahoma, the Defenders played their home games at the Cox Business Center. Tulsa, Oklahoma: Tulsa is the second-largest city in the state of Oklahoma and 47th-most populous city in the United States. Tulsa, Oklahoma:  As of July 2015, the population was 403,505, an increase of 11,599 over that reported in the 2010 Census.
403,505