Springfield is a city in Christian and Greene Counties in the U.S. state of Missouri. On July 1, 2006, its estimated population was 150,797, of whom 150,790 lived in Greene County and 7 lived in Christian County, making it the third largest city statewide. It is the county seat of Greene County. The Metropolitan Statistical Area for Springfield includes the counties of Christian, Dallas, Greene, Polk, and Webster. According to Forbes Magazine's list of "America's Wildest Weather Cities," Springfield is the city with the most varied weather in the nation.