Essex
- County:
- Kankakee County
- County Seat:
- No
- Area (mi²):
- 2.327
- State:
- Illinois
Essex is a village located in Kankakee County, Illinois. Essex has a 2026 population of 853. Essex is currently growing at a rate of 0.35% annually and its population has increased by 1.67% since the most recent census, which recorded a population of 839 in 2020.