Warren County, Missouri

Warren County
County
The Warren County Courthouse in Warrenton
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 38°46′N 91°10′W / 38.77°N 91.16°W / 38.77; -91.16
Country	United States
State	Missouri
Founded	January 5, 1833
Named for	General Joseph Warren
Seat	Warrenton
Largest city	Warrenton
Area
• Total	438 sq mi (1,130 km2)
• Land	429 sq mi (1,110 km2)
• Water	9.2 sq mi (24 km2)  2.1%
Population  (2020)
• Total	35,532
• Density	81/sq mi (31/km2)
Time zone	UTC−6 (Central)
• Summer (DST)	UTC−5 (CDT)
Congressional district	3rd
Website	www.warrencountymo.org

Warren County is a county located in the eastern portion of the U.S. state of Missouri. As of the 2020 census, the population was 35,532.^[1] The county is located on the north side of the Missouri River. Its county seat is Warrenton.^[2] The county was established on January 5, 1833, and was named for General Joseph Warren, who died in the Battle of Bunker Hill during the American Revolutionary War.^[3]

Warren County is part of the St. Louis, MO-IL Metropolitan Statistical Area. The county is traversed by Route 94, called the "Missouri Weinstrasse" because of the many vineyards from Marthasville east into St. Charles County. Warren County is also part of the Missouri Rhineland, with award-winning wineries located on both sides of the Missouri River.