Helena, Montana

8 ZIP codes · Mountain time

ZIP codes (largest first)

59601 · 31,72859602 · 30,75459625 · 66359604 (PO box)59620 (PO box)5962359624 (PO box)59626 (PO box)
Population33,639
StateMontana
CountyLewis and Clark County
Area code406
Time zoneMountain
Land area17.17 sq mi

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.