Portland ZIP codes: US ZIP code list for Portland, Maine (ME)
Quick answer
Portland, Maine has 5 US ZIP codes, running 04101 to 04108 inside Cumberland County. Each carries the same 5.5% 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
- 5Median covered metro: 12
- Number span
- 804101 to 04108
- Sorting prefixes
- 041USPS sectional centers
- Sales tax
- 5.5%Same in every listed code
Portland ZIP code footprint
How Portland's ZIP footprint compares with national norms.
5 ZIP codes are listed for Portland, covering a population of 68,408. They span 8 numbers, 04101 through 04108. The median covered metro on this site lists 12 codes; Portland ranks 88 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 5 codes share the 041 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to Portland passes through one facility. The range runs 04101 to 04108.
ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; Maine redraws tax and municipal lines on a different schedule entirely. A Portland mailing address does not prove an address sits inside Portland city limits, and a single code can straddle the boundary.
ZIP codes in Portland
All within Cumberland County, Maine.
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 Maine, even without local add-ons, remote sellers should validate the full delivery address against the Maine Revenue Services lookup at the time of sale.
Frequently asked questions
Common questions about this area.
- How many ZIP codes does Portland have?
- 5. They run from 04101 to 04108 across 1 sectional center prefix (041), spanning 8 numbers.
- What is the first ZIP code in Portland, ME?
- 04101 is the lowest-numbered code serving Portland. Numbering runs roughly northeast to west nationally, so Portland's 041 prefix reflects its position in the Maine sorting network, not its size.
- Do all Portland ZIP codes have the same sales tax rate?
- Inside Portland city limits, yes — 5.5% 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.
Portland sales tax breakdown and calculator
More Portland data
Other Portland datasets on this site.
- Portland population and income
- Portland sales tax rate
- Portland property tax
- Portland cost of living
- Portland home values and rent
- Portland crime rates
- Portland public schools
- Portland weather normals
- Portland commute times
Statewide: Maine cities · Maine ZIP codes · Maine sales tax · Maine counties