Joppa is a village in Massac County, Illinois, along the Ohio River. The population was 409 at the 2000 census. It is part of the Paducah, KY-IL Micropolitan Statistical Area.
Joppa is located at 37°12′27″N 88°50′35″W / 37.2075°N 88.84306°W / 37.2075; -88.84306 (37.207399, -88.843033).
According to the United States Census Bureau, the village has a total area of 0.5 square miles (1.3 km²), of which, 0.5 square miles (1.3 km²) of it is land and 2.00% is water.