Ascension Parish ZIP Codes

Ascension Parish is a parish of Louisiana.

ZIP codes: 11
Cities & towns: 10
Area codes: 1
Land area: 290 sq mi

Every ZIP code in Ascension Parish

703xx–707xx

The complete list of Ascension Parish, LA ZIP codes with the city each one delivers to.
ZIP code	City
70346	Donaldsonville
70707	Gonzales
70718	Brittany
70725	Darrow
70728	Duplessis
70734	Geismar
70737	Gonzales
70738	Burnside
70769	Prairieville
70774	Saint Amant
70778	Sorrento

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Ascension Parish

A further 7 places in Ascension Parish appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.

Area codes covering Ascension Parish

Telephone and postal boundaries are drawn by different bodies, so these codes overlap the parish without matching its edges.

225 Area code 225

Where Ascension Parish's ZIP codes sit

Each point is the reference point of one Ascension Parish ZIP code, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope every ZIP code recorded in Ascension Parish. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated 16 July 2026. The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.