Dallas County, Missouri

Dallas County
Dallas County Courthouse in Buffalo
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 37°40′N 93°01′W / 37.67°N 93.02°W / 37.67; -93.02
Country United States
State Missouri
FoundedDecember 10, 1844
Named afterGeorge M. Dallas
SeatBuffalo
Largest cityBuffalo
Area
  Total
543 sq mi (1,410 km2)
  Land541 sq mi (1,400 km2)
  Water2.1 sq mi (5 km2)  0.4%
Population
 (2020)
  Total
17,071
  Density31/sq mi (12/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district4th
Websitehttps://www.mocounties.com/dallas-county

Dallas County is a county located in the U.S. state of Missouri. As of the 2010 census, the population was 17,071. The county seat is Buffalo. The county was organized in 1842 as Niangua County and then renamed in 1844 for George M. Dallas, who served as Vice President under James K. Polk.

Dallas County is part of the Springfield metropolitan area.