There are 17 zip codes in Ada County, Idaho. The most populated is 83646, located in Meridian. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
8364672,804Meridian
8370958,321Boise
8364254,645Meridian
8370440,520Boise
8370636,806Boise
8363434,650Kuna
8361633,860Eagle
8371329,722Boise
8370527,849Boise
8371426,202Garden City
8370223,113Boise
8371621,092Boise
8370318,168Boise
8366914,235Star
837129,217Boise
83720Boise
83725Boise
showing: 17 rows

Zip Codes in Ada County, Idaho by Population (2024)