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Post Offices in Oto, IA
1 post office in Oto, Woodbury County · Data as of 10/21/2026
Post offices on this page
Post offices in Oto at a glance
- Oto has 1 post office in our data.
- It ranks 19th among 303 Iowa cities by number of post offices.
- Close by, Sioux City (5), Danbury (1) and Hornick (1) have post offices as well.
Post offices in Oto
A to Z
Frequently asked questions
- How many post offices are in Oto, IA?
- There is 1 post office in Oto as of 10/21/2026.
Data sources
- Overture Maps PlacesOverture Maps Foundation
Data as of 10/21/2026
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