What ZIP codes does Idaho use for mail and package delivery?

Idaho (ID) operates within the 5-digit ZIP prefix range 832xx–838xx. Mail routed to state capital Boise and key regional centers such as Boise, Meridian, Nampa adheres to these official USPS boundaries.

Which telephone area codes are valid for Idaho?

Idaho is served by 2 active North American Numbering Plan (NANPA) area codes: 208, 986. Synthetic telephone numbers for Idaho use those area codes with a 555 exchange, which is reserved for fictitious use.

How many counties are in Idaho?

Idaho is divided into 44 counties, including major administrative regions such as Ada, Canyon, Kootenai, Bonneville. Generated street addresses use those names.

What postal formatting conventions and addressing quirks are unique to Idaho?

Treasure Valley rapid growth coordinate grid systems (e.g., Ada and Canyon County county-line coordinate street designations like '10500 W State St'). Remote mountainous P.O. Box-only postal delivery routes throughout the Frank Church Wilderness and northern panhandle. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the Idaho addresses generated on this page real places?

No. All street numbers, recipient names, and telephone numbers generated for Idaho are entirely synthetic and randomized for software testing, database seed scripts, and form validation. They use Idaho ZIP codes from public USPS data and real city names, but they do not correspond to real individuals or private residences.

Random Idaho Address Generator

These addresses are randomly generated for software testing. They are not real people’s details: the street number, unit and recipient name are invented, and no record is checked for deliverability.

Randomly generated Idaho mailing addresses for software testing, form validation and staging data. Each record pairs a real Idaho city with a ZIP prefix that serves it and the county that city sits in, then adds a street number, a secondary unit designator and a recipient name that are invented.

Official Idaho Postal & Geographic Reference Specifications

Geographic & Postal Parameter	Official State Specification	Standardization Reference
Postal State Abbreviation	ID	USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range	832xx–838xx	USPS prefix-to-state assignment
Administrative Jurisdictions	44 Total Counties	US Census Bureau regional boundaries
Active Area Codes (NANPA)	`208, 986` (2 total)	North American Numbering Plan Administrator
State Capital	Boise	US Census Bureau
Primary Time Zone	America/Boise Timezone	IANA time zone database

Idaho Postal Geography & Key Cities

ZIP codes and Sectional Center Facilities are derived from public USPS ZIP code data, area codes from the North American Numbering Plan, and county names from US Census Bureau records. Street numbers and recipient names are synthetic, and nothing is checked against an address-verification service.

Cities the generator draws from:

Boise
Meridian
Nampa
Idaho Falls
Pocatello

Key Counties & Administrative Jurisdictions

County boundaries determine local sales tax jurisdictions in Idaho:

Ada County
Canyon County
Kootenai County
Bonneville County

Idaho Area Codes (ID)

Generated phone numbers use the area codes listed in the reference table above, paired with a 555 exchange so no number can reach a real line. Generate Idaho phone numbers.

Postal Delivery Standards & Format Nuances in Idaho

Treasure Valley rapid growth coordinate grid systems (e.g., Ada and Canyon County county-line coordinate street designations like '10500 W State St').
Remote mountainous P.O. Box-only postal delivery routes throughout the Frank Church Wilderness and northern panhandle.

Idaho Address Examples in USPS Publication 28 Format

Residential Delivery Point:
100 Main St, Apt 4B Boise, ID 83702-1204

Commercial / Multi-Unit Delivery Point:
Idaho Logistics & Software Corp 500 Enterprise Way, Suite 300 Meridian, ID 83642-4810

Frequently Asked Questions about Idaho Addresses

What ZIP codes does Idaho use for mail and package delivery?: Idaho (ID) operates within the 5-digit ZIP prefix range 832xx–838xx. Mail routed to state capital Boise and key regional centers such as Boise, Meridian, Nampa adheres to these official USPS boundaries.
Which telephone area codes are valid for Idaho?: Idaho is served by 2 active North American Numbering Plan (NANPA) area codes: 208, 986. Synthetic telephone numbers for Idaho use those area codes with a 555 exchange, which is reserved for fictitious use.
How many counties are in Idaho?: Idaho is divided into 44 counties, including major administrative regions such as Ada, Canyon, Kootenai, Bonneville. Generated street addresses use those names.
What postal formatting conventions and addressing quirks are unique to Idaho?: Treasure Valley rapid growth coordinate grid systems (e.g., Ada and Canyon County county-line coordinate street designations like '10500 W State St'). Remote mountainous P.O. Box-only postal delivery routes throughout the Frank Church Wilderness and northern panhandle. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.
Are the Idaho addresses generated on this page real places?: No. All street numbers, recipient names, and telephone numbers generated for Idaho are entirely synthetic and randomized for software testing, database seed scripts, and form validation. They use Idaho ZIP codes from public USPS data and real city names, but they do not correspond to real individuals or private residences.

Nearby & Bordering States

Explore test address generators for states sharing a geographic border with ID:

Idaho ZIP Prefixes

The first three digits of a ZIP code place an address within Idaho. These are the prefixes assigned to the state:

832xx, 834xx, 836xx, 837xx

Which processing facility sorts a given prefix is set by the current USPS labeling list L005 and changes as processing is consolidated, so it is not reproduced here. Look up a ZIP prefix to see its state and generate ZIP codes inside it.