| City: | Helena, Montana |
| Names to Avoid: | State Of Montana |
| County: | Lewis And Clark County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 7:00:00 AM |
| Population: | No Population Data |
| Area Code: | 406 |
| Classification: | PO Box |
| Coordinates: | 46.5925, -112.0355 |
| Quick Link: |
ZIP code 59620 serves a limited section of Helena, Montana, handling mail for a single street segment. This PO Box ZIP contains 36 ZIP+4 records, with 35 designated for PO Box delivery and just one street record for E 6th Ave.
The post office operates with city carrier routes, though the ZIP's geographic footprint is minimal. Helena's broader postal infrastructure uses 59601 as the standard delivery ZIP for most of the area, while 59620 functions as a supplementary designation within Lewis and Clark County. With no population or land area assigned to this specific ZIP, it serves as an administrative postal zone rather than a defined residential community.
The single street record on E 6th Ave suggests this ZIP serves a specific government or administrative facility rather than a residential neighborhood. The numbered avenue naming follows Helena's traditional grid pattern.
ZIP Code 59620 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 0Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 59620 is located in Lewis And Clark County, Montana, within the Helena, MT Metropolitan Statistical Area (CBSA 25740) and Montana's 2nd Congressional District. This Metro area has a population of 74,801 people, about 0.00% of whom live in ZIP Code 59620. It covers 0 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | Helena, MTSource: Census |
| CBSA Number: | 25740Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 74,801Source: Census |
| MSA: | Source: Census |
| Land Area: | --Source: Census |
| Water Area: | --Source: Census |
| Congressional District: | 02Source: USPS |
| Congressional Land Area: | 0 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 3035600Source: Census |
| Place Name: | Helena city; MontanaSource: Census |
We could not locate which school district 59620 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on March 1, 2026.