Billings ZIP codes: US ZIP code list for Billings, Montana (MT)
Quick answer
Billings, Montana has 4 US ZIP codes, running 59101 to 59106 inside Yellowstone County. Each carries the same 0% combined sales tax rate. ZIP boundaries are postal delivery routes, not tax boundaries — a code that crosses a city or district line can hold more than one rate, so destination-based sellers should validate by full street address.
- ZIP codes
- 4Median covered metro: 12
- Number span
- 659101 to 59106
- Sorting prefixes
- 591USPS sectional centers
- Sales tax
- 0%Same in every listed code
Billings ZIP code footprint
How Billings's ZIP footprint compares with national norms.
4 ZIP codes are listed for Billings, covering a population of 120,948. They span 6 numbers, 59101 through 59106. The median covered metro on this site lists 12 codes; Billings ranks 91 of 94 by count. Large metros carry more codes because USPS splits a delivery area once carrier volume outgrows one route cluster, not because the city is geographically bigger.
All 4 codes share the 591 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to Billings passes through one facility. The range runs 59101 to 59106.
ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; Montana redraws tax and municipal lines on a different schedule entirely. A Billings mailing address does not prove an address sits inside Billings city limits, and a single code can straddle the boundary.
ZIP codes in Billings
All within Yellowstone County, Montana.
Why ZIP-based rate lookup is unreliable
USPS redraws ZIP codes when carrier routes change. Tax jurisdictions move with annexations, county lines and voter-approved districts. The two never line up. In Montana, local jurisdictions set their own increments, so remote sellers should validate the full delivery address against the Montana Department of Revenue lookup at the time of sale.
Frequently asked questions
Common questions about this area.
- How many ZIP codes does Billings have?
- 4. They run from 59101 to 59106 across 1 sectional center prefix (591), spanning 6 numbers.
- What is the first ZIP code in Billings, MT?
- 59101 is the lowest-numbered code serving Billings. Numbering runs roughly northeast to west nationally, so Billings's 591 prefix reflects its position in the Montana sorting network, not its size.
- Do all Billings ZIP codes have the same sales tax rate?
- Inside Billings city limits, yes — 0% applies. A code that extends past the city line can carry a different rate on part of its territory. Validate by street address, not ZIP, when the sale is destination-based. Confirm current rates with your state revenue agency before filing.
Billings sales tax breakdown and calculator
More Billings data
Other Billings datasets on this site.
- Billings population and income
- Billings sales tax rate
- Billings property tax
- Billings cost of living
- Billings home values and rent
- Billings crime rates
- Billings public schools
- Billings weather normals
- Billings commute times
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