Springfield is the third most populous city in the U.S. state of Missouri and the county seat of Greene County. The city's population was 169,176 at the 2020 census. It is the principal city of the Springfield metropolitan area, which had an estimated population of 487,061 in 2022 and includes the counties of Christian, Dallas, Greene, Polk, and Webster. Springfield is the largest city in the Ozarks region, and sits on the Springfield Plateau, which ranges from nearly level to rolling hills.