San Diego Texas ZIP Codes
San Diego holds a single ZIP code.
Every ZIP code in San Diego
| ZIP code | County |
|---|---|
| 78384 | Duval County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Diego codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for San Diego. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every San Diego ZIP code begins 783. Those first three digits identify the sectional center facility that processes mail for this part of Texas. Statewide that range covers 49 ZIP codes, so San Diego accounts for 2% of it.
Every Texas ZIP prefix and the region it covers →
Area codes covering San Diego
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The code below serves the same ground San Diego occupies.
San Diego Texas area codes in full →
Where San Diego's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near San Diego
| City | Distance | ZIP codes |
|---|---|---|
| Alice Texas ZIP codes | 11 mi | 2 ZIP codes |
| Benavides Texas ZIP codes | 16 mi | 1 ZIP code |
| Orange Grove Texas ZIP codes | 23 mi | 1 ZIP code |
| Freer Texas ZIP codes | 25 mi | 1 ZIP code |
| Premont Texas ZIP codes | 29 mi | 1 ZIP code |
| Kingsville Texas ZIP codes | 29 mi | 2 ZIP codes |
| Bishop Texas ZIP codes | 30 mi | 1 ZIP code |
| Driscoll Texas ZIP codes | 31 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.