Vernon
- County:
- Marion County
- County Seat:
- No
- Area (mi²):
- 0.882
- State:
- Illinois
Vernon is a village located in Marion County, Illinois. Vernon has a 2026 population of 100. Vernon is currently declining at a rate of -0.99% annually and its population has decreased by -1.96% since the most recent census, which recorded a population of 102 in 2020.
The median household income in Vernon is $60,313 with a poverty rate of 23.19%. The median age in Vernon is 46.3 years: 46.8 years for males, and 43.7 years for females. For every 100 females there are 81.6 males.