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Boise ZIP codes: US ZIP code list for Boise, Idaho (ID)

Quick answer

Boise, Idaho has 10 US ZIP codes, running 83702 to 83716 inside Ada County. Each carries the same 6% 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
10Median covered metro: 12
Number span
1583702 to 83716
Sorting prefixes
837USPS sectional centers
Sales tax
6%Same in every listed code

Boise ZIP code footprint

How Boise's ZIP footprint compares with national norms.

10 ZIP codes are listed for Boise, covering a population of 235,684. They span 15 numbers, 83702 through 83716. The median covered metro on this site lists 12 codes; Boise ranks 55 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 10 codes share the 837 prefix. That first trio is the sectional center facility — the USPS plant that sorts mail for the region — so every piece addressed to Boise passes through one facility. The range runs 83702 to 83716.

ZIP boundaries are carrier routes, not city limits. USPS redraws them when delivery volume shifts; Idaho redraws tax and municipal lines on a different schedule entirely. A Boise mailing address does not prove an address sits inside Boise city limits, and a single code can straddle the boundary.

ZIP codes in Boise

All within Ada County, Idaho.

Source: Idaho State Tax Commission rate tables · rates as published for 2026

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 Idaho, local jurisdictions set their own increments, so remote sellers should validate the full delivery address against the Idaho State Tax Commission lookup at the time of sale.

Frequently asked questions

Common questions about this area.

How many ZIP codes does Boise have?
10. They run from 83702 to 83716 across 1 sectional center prefix (837), spanning 15 numbers.
What is the first ZIP code in Boise, ID?
83702 is the lowest-numbered code serving Boise. Numbering runs roughly northeast to west nationally, so Boise's 837 prefix reflects its position in the Idaho sorting network, not its size.
Do all Boise ZIP codes have the same sales tax rate?
Inside Boise city limits, yes — 6% 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.

Boise sales tax breakdown and calculator

Other Boise datasets on this site.

Statewide: Idaho cities · Idaho ZIP codes · Idaho sales tax · Idaho counties