Zip Code Listings for Helena, Montana The following are the areas codes and zip codes for Helena, Montana 59601 (area code: 406)
59602 (area code: 406)
59604 (area code: 406)
59620 (area code: 406)
59623 (area code: 406)
59624 (area code: 406)
59625 (area code: 406)
59626 (area code: 406)