New London
- County:
- Ralls County
- County Seat:
- Yes
- Area (mi²):
- 0.694
- State:
- Missouri
New London is a city located in Ralls County, Missouri. New London has a 2026 population of 977. It is also the county seat of Ralls County. New London is currently growing at a rate of 0.93% annually and its population has increased by 4.27% since the most recent census, which recorded a population of 937 in 2020.