Oto Iowa is covered by a total of 1 ZIP Codes. There are also 1 ZIP Codes that overlap Oto but have a different postal city name. The ZIP Codes in Oto range from 51044 to 51056. Of the ZIP codes within or partially within Oto there are 1 Standard ZIP Codes. The total population of ZIP Codes in Oto is 216.
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| ZIP Code | ZIP Code City/Town | ZIP Code Type | |||
|---|---|---|---|---|---|
| Oto | Standard | |||
| Smithland | Standard |