Vernon is a village in Marion County, Illinois, United States.

[5] Vernon is the birthplace of Herbert Ryman, an artist at Walt Disney Studios.

Salem, the Marion county seat, is 18 miles (29 km) to the southeast.

According to the U.S. Census Bureau, Vernon has a total area of 0.88 square miles (2.28 km2), all land.

The racial makeup of the village was 98.31% White, 0.56% Native American, and 1.12% from two or more races.