Missouri's 19th Senatorial District is one of 34 districts in the Missouri Senate. The district has been represented by Democrat Stephen Webber since 2025.
The district is in central Missouri and encompasses the entirety of Boone County, which includes the major city of Columbia, its surrounding suburbs, and several outlying small towns. Those include Ashland, Centralia, Hallsville, Rocheport, and Sturgeon. The district is also home to the University of Missouri, Columbia College, the State Historical Society of Missouri, and numerous state parks and conservation areas.
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