Eldorado is located in Preble County. About 458 people live here (as of 2020). Between 2010 and 2020, the population declined from 509 to 458. The region is at 346 meters above sea level. The area covers about 0.6 square kilometers. There are about 21 streets in Eldorado. The postal codes are 45321. Eldorado is human settlement in Preble County, Ohio, United States of America.
| Area | 0.6 km² |
| Elevation | 346 m |
| Located in | Preble County |
| Postal code | 45321 |
| Country | United States |
| Population | 458 |
| Official name | Eldorado |
| Bike path |
| Bike lane on roadway |
| Cycling allowed on bus lane |
| Bicycle street |
| Open to cyclists |
| Open to cyclists, good path |
| Cycling prohibited |
| Cobblestone |
| Long-distance bike route | (depending on scale) |
| Long-distance bike route |
| Long-distance hiking trail | (depending on scale) |
| Long-distance hiking trail |
| Pedestrians prohibited |
Public transit map Eldorado Legend 
Bicycle map Eldorado Legend 
Pedestrian map Eldorado Legend