New London is a city in Ralls County, Missouri, United States.

William Jameson, claimed land, made a plat, and founded New London in 1819.

The Ralls County Courthouse in New London was built in 1858 and is the oldest court house in Missouri.

The county courthouse was built in 1858 and is the oldest court house in Missouri.

In the front yard of the court house stands a WWI cannon.

Today, the Ralls County Courthouse and Jail-Sheriff's House are listed on the National Register of Historic Places.

[11] According to the United States Census Bureau, the city has a total area of 0.69 square miles (1.79 km2), all land.

32.4% of all households were made up of individuals, and 12.8% had someone living alone who was 65 years of age or older.

27.3% of all households were made up of individuals, and 13.1% had someone living alone who was 65 years of age or older.