Maries County, Missouri

Maries County, Missouri
Maries County Courthouse
Location within the U.S. state of Missouri
Coordinates: 38°11′N 91°55′W / 38.18°N 91.92°W / 38.18; -91.92
Country United States
State Missouri
FoundedMarch 2, 1855
Named afterThe Maries River and Little Maries River
SeatVienna
Largest cityBelle
Area
 • Total
530 sq mi (1,400 km2)
 • Land527 sq mi (1,360 km2)
 • Water2.9 sq mi (7.5 km2)  0.6%
Population
 (2020)
 • Total
8,432
 • Density16.0/sq mi (6.18/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (CDT)
Congressional district3rd
Websitewww.mariescountymo.gov

Maries County is a county located in the U.S. state of Missouri. As of the 2020 census, its population was 8,432. Its county seat is Vienna. The county was organized March 2, 1855, and named for the Maries River and Little Maries River. The word "Maries" is derived from the French word marais, which means "marsh, lake, or pond".