Wichita is the 51st largest city in the United States with an estimated population of 476,026 as of July, 2007. The Wichita Metropolitan Statistical area (MSA), which encompasses Sedgwick, Butler, Harvey, and Sumner counties, has a 2007 estimated population of 596,452 people residing in 258,125 households, making it the 84th largest MSA in the United States.