Joppa
- County:
- Massac County
- County Seat:
- No
- Area (mi²):
- 0.486
- State:
- Illinois
Joppa is a village located in Massac County, Illinois. Joppa has a 2026 population of 333. Joppa is currently declining at a rate of -1.77% annually and its population has decreased by -4.86% since the most recent census, which recorded a population of 350 in 2020.
The median household income in Joppa is $41,563 with a poverty rate of 22.39%. The median age in Joppa is 32.3 years: 32.5 years for males, and 32.3 years for females. For every 100 females there are 156.4 males.