Kelso
- County:
- Scott County
- County Seat:
- No
- Area (mi²):
- 0.317
- State:
- Missouri
Kelso is a village located in Scott County, Missouri. Kelso has a 2026 population of 553. Kelso is currently declining at a rate of 0% annually and its population has decreased by -0.54% since the most recent census, which recorded a population of 556 in 2020.
The median household income in Kelso is $56,875 with a poverty rate of 12.6%. The median age in Kelso is 34.9 years: 35 years for males, and 32.5 years for females. For every 100 females there are 83.8 males.