Humboldt County, Iowa ZIP Codes

Zip Code
City
Population ↓
50548Humboldt5,722
50519Bode765
50529Dakota City752
50558Livermore653
50591Thor405
50577Renwick341
50570Ottosen203
50582Rutland170
50545Hardy139
50520Bradgate114

Overview of ZIP Codes in Humboldt County

ZCTAs are geographic areas created by the US Census Bureau to approximate the delivery areas of ZIP Codes for statistical analysis. While ZCTAs use the same five-digit codes as ZIP Codes, they represent defined geographic areas that may not exactly match the mail delivery routes of ZIP Codes.
10
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 10 ZCTAs in Humboldt County, Iowa (US Census).

Sources

  1. US Census: 2025 Gazetteer Files
  2. US Census: ZIP Code Tabulation Areas (ZCTAs)

Recommended Reading