Watson is a village in Effingham County, Illinois, United States.

Watson is part of the Effingham, IL Micropolitan Statistical Area.

[3] Watson is located in south-central Effingham County and Illinois Route 37 passes through the village, leading east 1.5 miles (2.4 km) to U.S. Route 45 and south 3 miles (5 km) to Interstate 57 at Exit 151.

Effingham, the county seat, is 8 miles (13 km) north via US 45.

23.24% of all households were made up of individuals, and 3.52% had someone living alone who was 65 years of age or older.