Humboldt, IA is a city located in Humboldt County, Iowa and has a land area of 124.28 square miles (321.88 km2). The water area for the city is 0.88 square miles or 2.28 km2. There is one unique zip code in Humboldt, Iowa and it is 50548. The area code(s) for Humboldt is 515.
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