| Iona, South Dakota | |
|---|---|
| — Township — | |
| Coordinates: | |
| Country | United States |
| State | South Dakota |
| County | Lyman |
| Area | |
| • Total | 137.8 sq mi (356.9 km2) |
| • Land | 125.7 sq mi (325.5 km2) |
| • Water | 12.1 sq mi (31.4 km2) |
| Elevation | 1,693 ft (516 m) |
| Population (2000) | |
| • Total | 100 |
| • Density | 0.8/sq mi (0.3/km2) |
| Time zone | Central (CST) (UTC-6) |
| • Summer (DST) | CDT (UTC-5) |
| ZIP code | 57542 |
| Area code(s) | 605 |
| FIPS code | 46-31740[1] |
| GNIS feature ID | 1267997[2] |
Iona is an unincorporated community in Lyman County, South Dakota, United States. Although not tracked by the Census Bureau, Iona has been assigned the ZIP code of 57542.
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