New London, Missouri

New London, Missouri
New London in 2025
Location of New London, Missouri
Coordinates: 39°35′07″N 91°24′04″W / 39.58528°N 91.40111°W / 39.58528; -91.40111
CountryUnited States
StateMissouri
CountyRalls
Area
 • Total
0.70 sq mi (1.81 km2)
 • Land0.69 sq mi (1.80 km2)
 • Water0.0039 sq mi (0.01 km2)
Elevation
656 ft (200 m)
Population
 (2020)
 • Total
943
 • Density1,358.3/sq mi (524.44/km2)
Time zoneUTC-6 (Central (CST))
 • Summer (DST)UTC-5 (CDT)
ZIP code
63459
Area code573
FIPS code29-52058
GNIS feature ID0723280

New London is a city in and the county seat of Ralls County, Missouri, United States. The population was 943 at the 2020 census.

New London is part of the Hannibal Micropolitan Statistical Area. William Jameson, claimed land, made a plat, and founded New London in 1819. New London was named the county seat in 1820. The Ralls County Courthouse in New London was built in 1858 and is the oldest court house in Missouri.