Idaho
Postal abbreviation ID. 320 ZIP codes across 44 counties.
| Population | 1,934,262 |
|---|---|
| Postal abbreviation | ID |
| ZIP codes | 320 ZIP codes → |
| Area codes | 208986 |
| Time zones | Mountain, Pacific |
| Counties | 44 |
Largest cities by population
Meridian · 130,138Nampa · 110,319Idaho Falls · 67,725Caldwell · 66,516Pocatello · 57,635Coeur d'Alene · 56,447Twin Falls · 54,164Post Falls · 43,391Rexburg · 40,543Lewiston · 34,651Eagle · 32,855Kuna · 27,158Moscow · 26,286Mountain Home · 16,493Hayden · 16,338Star · 14,745
Largest counties by population
Ada County · 518,935Canyon County · 250,790Kootenai County · 181,996Bonneville County · 129,523Twin Falls County · 93,734Bannock County · 89,454Madison County · 54,618Bonner County · 51,049Bingham County · 49,664Nez Perce County · 42,697
Counties in Idaho
Ada CountyAdams CountyBannock CountyBear Lake CountyBenewah CountyBingham CountyBlaine CountyBoise CountyBonner CountyBonneville CountyBoundary CountyButte CountyCamas CountyCanyon CountyCaribou CountyCassia CountyClark CountyClearwater CountyCuster CountyElmore CountyFranklin CountyFremont CountyGem CountyGooding CountyIdaho CountyJefferson CountyJerome CountyKootenai CountyLatah CountyLemhi CountyLewis CountyLincoln CountyMadison CountyMinidoka CountyNez Perce CountyOneida CountyOwyhee CountyPayette CountyPower CountyShoshone CountyTeton CountyTwin Falls CountyValley CountyWashington County
Population: U.S. Census Bureau, ACS 5-year estimates, 2024.