Dallas County
Also known as Dallas County, Missouri, Dallas County, MO
county in Missouri, United States
Key facts
- Country
- United States
- State
- Missouri
- Founded
- December 10, 1844
- Named after
- George M. Dallas
- Seat
- Buffalo
- Largest city
- Buffalo
- Total
- 543 sq mi (1,410 km )
- Land
- 541 sq mi (1,400 km )
- Water
- 2.1 sq mi (5.4 km ) 0.4%
- Estimate 2025
- 18,025
- Density
- 31.6/sq mi (12.2/km )
- Time zone
- UTC−6 ( Central )
- Summer dst
- UTC−5 ( CDT )
~6 min read
Article
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.