
Watson
- County:
- Effingham County
- County Seat:
- No
- Area (mi²):
- 1.092
- State:
- Illinois
Watson is a village located in Effingham County, Illinois. Watson has a 2025 population of 651. Watson is currently declining at a rate of -0.61% annually and its population has decreased by -2.84% since the most recent census, which recorded a population of 670 in 2020.
The average household income in Watson is $64,550 with a poverty rate of 20.62%. The median age in Watson is 41.4 years: 39.3 years for males, and 44.7 years for females.