San Juan County ZIP Codes
San Juan County is a county of Colorado.
- ZIP codes
- 1
- Cities & towns
- 1
- Area codes
- 2
- Land area
- 388 sq mi
Every ZIP code in San Juan County
| ZIP code | City |
|---|---|
| 81433 | Silverton |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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
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.
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 . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.