Donaldsonville Louisiana ZIP Codes
Donaldsonville holds a single ZIP code.
Every ZIP code in Donaldsonville
| ZIP code | Parish |
|---|---|
| 70346 | Ascension 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Donaldsonville codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Donaldsonville. 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 Donaldsonville 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 Donaldsonville accounts for 3% of it.
Every Louisiana ZIP prefix and the region it covers →
Area codes covering Donaldsonville
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 Donaldsonville occupies.
Donaldsonville Louisiana area codes in full →
Where Donaldsonville's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Donaldsonville
| City | Distance | ZIP codes |
|---|---|---|
| Gonzales Louisiana ZIP codes | 9.1 mi | 2 ZIP codes |
| Sorrento Louisiana ZIP codes | 9.7 mi | 1 ZIP code |
| White Castle Louisiana ZIP codes | 10 mi | 1 ZIP code |
| Napoleonville Louisiana ZIP codes | 11 mi | 1 ZIP code |
| Lutcher Louisiana ZIP codes | 17 mi | 1 ZIP code |
| Gramercy Louisiana ZIP codes | 18 mi | 1 ZIP code |
| French Settlement Louisiana ZIP codes | 20 mi | 1 ZIP code |
| Plaquemine Louisiana ZIP codes | 20 mi | 2 ZIP codes |
Straight-line distance between place reference points, not driving distance.