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Ion, Iowa | |
|---|---|
| Coordinates: 43°06′46″N 91°15′43″W / 43.11278°N 91.26194°W | |
| Country | United States |
| State | Iowa |
| County | Allamakee |
| Elevation | 679 ft (207 m) |
| Time zone | UTC-6 (Central (CST)) |
| • Summer (DST) | UTC-5 (CDT) |
| Area code | 563 |
| GNIS feature ID | 464590[1] |
Ion is an unincorporated community in Allamakee County, Iowa, United States.[1]

Ion was platted in 1855 [2] and was named after a character in a novel, one of the settlers had recently read.[3] Ion's population was 52 in 1902.[4]