| Official Name: | Eldena, Illinois |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Illinois#USA |
| Pushpin Label: | Eldena |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Lee |
| Subdivision Type3: | Township |
| Subdivision Name3: | South Dixon |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 801 |
| Coordinates: | 41.7711°N -89.41°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 61324 |
| Area Code: | 815 & 779 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 407840 |
Eldena is an unincorporated community in Lee County, Illinois, United States. Its ZIP code is 61324.[1]
The community was named after Eldena Van Epp, the wife of an original owner of the town site.[2]