Otho Iowa ZIP Codes

Otho holds a single ZIP code.

Every ZIP code in Otho

The complete list of Otho, Iowa ZIP codes with the county each falls in.
ZIP code	County
50569	Webster County

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Otho codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Otho. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

How these codes cluster

Every Otho ZIP code begins 505. Those first three digits identify the sectional center facility that processes mail for this part of Iowa. Statewide that range covers 75 ZIP codes, so Otho accounts for 1% of it.

Every Iowa ZIP prefix and the region it covers →

Area codes covering Otho

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground Otho occupies.

515 Area code 515

Otho Iowa area codes in full →

Where Otho's ZIP codes sit

Each point is one Otho ZIP code, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Cities near Otho

The closest places to Otho with their own ZIP code list, nearest first.
City	Distance	ZIP codes
Fort Dodge Iowa ZIP codes	6.2 mi	1 ZIP code
Lehigh Iowa ZIP codes	6.6 mi	1 ZIP code
Moorland Iowa ZIP codes	7.6 mi	1 ZIP code
Duncombe Iowa ZIP codes	8.4 mi	1 ZIP code
Callender Iowa ZIP codes	8.5 mi	1 ZIP code
Harcourt Iowa ZIP codes	11 mi	1 ZIP code
Dayton Iowa ZIP codes	12 mi	1 ZIP code
Gowrie Iowa ZIP codes	12 mi	1 ZIP code

Straight-line distance between place reference points, not driving distance.