Ada County, Idaho ZIP Codes

16 ZIP Codes

Zip Code
City
Population ↓
83646Meridian76,023
83642Meridian62,279
83709Boise58,928
83704Boise42,719
83634Kuna36,286
83706Boise35,524
83616Eagle35,413
83713Boise31,549
83714Garden City27,564
83705Boise26,830
83702Boise24,163
83703Boise17,583
83669Star16,827
83712Boise9,071
83720Boise0
83725Boise0

Overview of ZIP Codes in Ada 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.
16
ZIP Codes

The data shown reflect ZCTAs from the US Census. As of 2025, there are 16 ZCTAs in Ada County, Idaho (US Census).

Sources

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

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