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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Otho, IA

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Counties:WEBSTER, IA
Area Code(s):515
Timezone(s):Central (GMT -06:00)
City Population:542 (More Details)
CBSA:Fort Dodge, IA
Congressional District(s):04
Land Area:716 square miles (county)
Water Area:3 square miles (county)

1 ZIP Code

Otho, IA ZIP Code Boundaries

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Otho, IA Covers 1 ZIP Code

ZIP CodeTypePopulation% of PopulationAliases

Otho, IA Demographic Information *

Total population**542
Male population283
Female population259
Median age (years)42.6
White Population529
Black Population3
Indian Population2
Asian Population0
Hawaiian Population1
Hispanic Population11
Median age (Male)39.8
Median age (Female)45.1
Total households237
Family households (families)152
Average household size2.29
Average family size2.8
Total housing units260
* Demographic data is based on 2010 Census for the City of OTHO.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],