San Juan County ZIP Codes

San Juan County is a county of Utah.

ZIP codes: 9
Cities & towns: 9
Area codes: 1
Land area: 7,824 sq mi

Every ZIP code in San Juan County

845xx

The complete list of San Juan County, UT ZIP codes with the city each one delivers to.
ZIP code	City
84510	Aneth
84511	Blanding
84512	Bluff
84530	La Sal
84531	Mexican Hat
84533	Lake Powell
84534	Montezuma Creek
84535	Monticello
84536	Monument Valley

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the San Juan County codes above are listed without a column we would have to invent.

Cities and towns in San Juan County

A further 6 places in San Juan County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering San Juan County

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.

435 Area code 435

Where San Juan County's ZIP codes sit

Each point is the reference point of one San Juan County ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in San Juan County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.