'''Chesterfield''' is a major suburb in the [[St. Louis]] metropolitan area, located in the western part of [[St. Louis County, Missouri|St. Louis County]], [[Missouri]]. At the 2010 census, it had a population of 47,494, making it the second-largest city in the county and the 14th-largest in the state of [[Missouri]] overall. It was formed in 1988 through the consolidation of several older communities in what is known as the Chesterfield Valley. | '''Chesterfield''' is a major suburb in the [[St. Louis]] metropolitan area, located in the western part of [[St. Louis County, Missouri|St. Louis County]], [[Missouri]]. At the 2010 census, it had a population of 47,494, making it the second-largest city in the county and the 14th-largest in the state of [[Missouri]] overall. It was formed in 1988 through the consolidation of several older communities in what is known as the Chesterfield Valley. |