Rio Grande City Texas ZIP Codes
Rio Grande City holds a single ZIP code.
Every ZIP code in Rio Grande City
| ZIP code | County |
|---|---|
| 78582 | Starr 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Rio Grande City codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Rio Grande City. 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 Rio Grande City ZIP code begins 785. Those first three digits identify the sectional center facility that processes mail for this part of Texas. Statewide that range covers 68 ZIP codes, so Rio Grande City accounts for 1% of it.
Every Texas ZIP prefix and the region it covers →
Area codes covering Rio Grande City
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 Rio Grande City occupies.
Rio Grande City Texas area codes in full →
Where Rio Grande City's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Rio Grande City
| City | Distance | ZIP codes |
|---|---|---|
| Roma Texas ZIP codes | 12 mi | 1 ZIP code |
| Sullivan City Texas ZIP codes | 18 mi | 1 ZIP code |
| La Joya Texas ZIP codes | 23 mi | 1 ZIP code |
| Penitas Texas ZIP codes | 25 mi | 1 ZIP code |
| Mission Texas ZIP codes | 33 mi | 3 ZIP codes |
| Mcallen Texas ZIP codes | 37 mi | 5 ZIP codes |
| Hidalgo Texas ZIP codes | 40 mi | 1 ZIP code |
| Edinburg Texas ZIP codes | 42 mi | 4 ZIP codes |
Straight-line distance between place reference points, not driving distance.