- Located northwest of Metropolis
- Latitude: 37°12'23" N (+37.2064)
- Longitude: 88°50'41" W (-88.8447)
- Elevation: 350 feet above sea level
- Public Land Survey: T. 15 S., R. 3 E.
- Precinct: Hillerman
- Land area: 0.49 square miles (312.3 acres)
- Water area: 0.01 square miles (5.2 acres)
As the crow flies, Joppa is...
| Year | Population | Percent change |
|---|
| 1990 | 492 | -- |
| 2000 | 409 | -16.9% |