Johnson City Tennessee ZIP Codes

Johnson City holds 6 ZIP codes, all inside one county and one postal prefix.

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Johnson City codes above are listed without a column we would have to invent.

Scope every ZIP code recorded for Johnson City. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.

Every Johnson City ZIP code begins 376. Those first three digits identify the sectional center facility that processes mail for this part of Tennessee. Statewide that range covers 42 ZIP codes, so Johnson City accounts for 14% of it.

Every Tennessee ZIP prefix and the region it covers →

ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Johnson City occupies.

• 423 Area code 423
• 729 Area code 729

Johnson City Tennessee area codes in full →

Straight-line distance between place reference points, not driving distance.