Grand Isle Louisiana ZIP Codes
Grand Isle holds a single ZIP code.
Every ZIP code in Grand Isle
| ZIP code | Parish |
|---|---|
| 70358 | Jefferson Parish |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Grand Isle codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Grand Isle. 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 Grand Isle ZIP code begins 703. Those first three digits identify the sectional center facility that processes mail for this part of Louisiana. Statewide that range covers 38 ZIP codes, so Grand Isle accounts for 3% of it.
Every Louisiana ZIP prefix and the region it covers →
Area codes covering Grand Isle
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 Grand Isle occupies.
Grand Isle Louisiana area codes in full →
Where Grand Isle's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Grand Isle
| City | Distance | ZIP codes |
|---|---|---|
| Golden Meadow Louisiana ZIP codes | 19 mi | 1 ZIP code |
| Lockport Louisiana ZIP codes | 42 mi | 1 ZIP code |
| Houma Louisiana ZIP codes | 48 mi | 4 ZIP codes |
| Gretna Louisiana ZIP codes | 48 mi | 3 ZIP codes |
| Westwego Louisiana ZIP codes | 48 mi | 2 ZIP codes |
| Kenner Louisiana ZIP codes | 57 mi | 5 ZIP codes |
| New Orleans Louisiana ZIP codes | 58 mi | 61 ZIP codes |
| Thibodaux Louisiana ZIP codes | 62 mi | 3 ZIP codes |
Straight-line distance between place reference points, not driving distance.