Warren County, Iowa ZIP Codes

12 ZIP Codes

Zip Code
City
Population ↓
50125Indianola20,121
50211Norwalk16,835
50047Carlisle6,690
50166Milo2,023
50229Prole1,585
50210New Virginia1,487
50139Lacona1,025
50118Hartford920
50001Ackworth650
50160Martensdale569
50145Liberty Center139
50241Saint Marys96

Overview of ZIP Codes in Warren 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.
12
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 12 ZCTAs in Warren County, Iowa (US Census).

Sources

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

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