Ralls County, Missouri

Ralls County
Ralls County Courthouse in New London
Location within the U.S. state of Missouri
Missouri's location within the U.S.
Coordinates: 39°32′N 91°32′W / 39.53°N 91.53°W / 39.53; -91.53
Country United States
State Missouri
FoundedNovember 16, 1820
Named afterDaniel Ralls
SeatNew London
Largest cityHannibal
Area
  Total
484 sq mi (1,250 km2)
  Land470 sq mi (1,200 km2)
  Water14 sq mi (40 km2)  2.65%
Population
 (2020)
  Total
10,355
  Density21/sq mi (8.3/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Congressional district6th
Websitewww.rallscounty.org

Ralls County is a county located in the northeastern portion of the U.S. state of Missouri. As of the 2020 census, the population was 10,355. Its county seat is New London. The county was organized November 16, 1820, and named for Daniel Ralls, Missouri state legislator.

Ralls County is part of the Hannibal, MO Micropolitan Statistical Area, which is also included in the Quincy-Hannibal, IL-MO Combined Statistical Area.