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

Utah (UT) operates within the 5-digit ZIP prefix range 840xx–847xx. Mail routed to state capital Salt Lake City and key regional centers such as Salt Lake City, West Valley City, Provo adheres to these official USPS boundaries.

Which telephone area codes are valid for Utah?

Utah is served by 3 active North American Numbering Plan (NANPA) area codes: 385, 435, 801. Synthetic telephone numbers for Utah use those area codes with a 555 exchange, which is reserved for fictitious use.

How many counties are in Utah?

Utah is divided into 29 counties, including major administrative regions such as Salt Lake, Utah, Davis, Weber. Generated street addresses use those names.

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

Salt Lake City's mathematical Cartesian coordinate grid system (e.g., '450 South 900 East' or '450 S 900 E'), where the coordinate indicates exactly how many blocks south and east of the Temple Square zero-point the building is located. Rapidly growing Silicon Slopes tech corridor addressing spanning Salt Lake and Utah counties. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.

Are the Utah addresses generated on this page real places?

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

Random Utah 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 Utah mailing addresses for software testing, form validation and staging data. Each record pairs a real Utah 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 Utah Postal & Geographic Reference Specifications

Geographic & Postal Parameter	Official State Specification	Standardization Reference
Postal State Abbreviation	UT	USPS Publication 28 & ISO 3166-2:US
5-Digit ZIP Prefix Range	840xx–847xx	USPS prefix-to-state assignment
Administrative Jurisdictions	29 Total Counties	US Census Bureau regional boundaries
Active Area Codes (NANPA)	`385, 435, 801` (3 total)	North American Numbering Plan Administrator
State Capital	Salt Lake City	US Census Bureau
Primary Time Zone	Mountain Time (America/Denver, UTC-7 / UTC-6 DST)	IANA time zone database

Utah 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:

Salt Lake City
West Valley City
Provo
West Jordan
Orem
Ogden

Key Counties & Administrative Jurisdictions

County boundaries determine local sales tax jurisdictions in Utah:

Salt Lake County
Utah County
Davis County
Weber County

Utah Area Codes (UT)

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 Utah phone numbers.

Postal Delivery Standards & Format Nuances in Utah

Salt Lake City's mathematical Cartesian coordinate grid system (e.g., '450 South 900 East' or '450 S 900 E'), where the coordinate indicates exactly how many blocks south and east of the Temple Square zero-point the building is located.
Rapidly growing Silicon Slopes tech corridor addressing spanning Salt Lake and Utah counties.

Utah Address Examples in USPS Publication 28 Format

Residential Delivery Point:
100 Main St, Apt 4B Salt Lake City, UT 84101-1204

Commercial / Multi-Unit Delivery Point:
Utah Logistics & Software Corp 500 Enterprise Way, Suite 300 West Valley City, UT 84119-4810

Frequently Asked Questions about Utah Addresses

What ZIP codes does Utah use for mail and package delivery?: Utah (UT) operates within the 5-digit ZIP prefix range 840xx–847xx. Mail routed to state capital Salt Lake City and key regional centers such as Salt Lake City, West Valley City, Provo adheres to these official USPS boundaries.
Which telephone area codes are valid for Utah?: Utah is served by 3 active North American Numbering Plan (NANPA) area codes: 385, 435, 801. Synthetic telephone numbers for Utah use those area codes with a 555 exchange, which is reserved for fictitious use.
How many counties are in Utah?: Utah is divided into 29 counties, including major administrative regions such as Salt Lake, Utah, Davis, Weber. Generated street addresses use those names.
What postal formatting conventions and addressing quirks are unique to Utah?: Salt Lake City's mathematical Cartesian coordinate grid system (e.g., '450 South 900 East' or '450 S 900 E'), where the coordinate indicates exactly how many blocks south and east of the Temple Square zero-point the building is located. Rapidly growing Silicon Slopes tech corridor addressing spanning Salt Lake and Utah counties. All addresses generated on this platform format secondary unit designators (Apt, Ste, Fl) and street suffixes according to USPS CASS standards.
Are the Utah addresses generated on this page real places?: No. All street numbers, recipient names, and telephone numbers generated for Utah are entirely synthetic and randomized for software testing, database seed scripts, and form validation. They use Utah 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 UT:

Utah ZIP Prefixes

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

840xx, 841xx, 844xx, 846xx

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.