Jefferson Davis Parish ZIP Codes

Jefferson Davis Parish is a parish of Louisiana.

ZIP codes: 7
Cities & towns: 7
Area codes: 1
Land area: 652 sq mi

Every ZIP code in Jefferson Davis Parish

705xx–706xx

The complete list of Jefferson Davis Parish, LA ZIP codes with the city each one delivers to.
ZIP code	City
70532	Elton
70546	Jennings
70549	Lake Arthur
70581	Roanoke
70591	Welsh
70640	Fenton
70650	Lacassine

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Jefferson Davis Parish

A further 2 places in Jefferson Davis 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 Jefferson Davis Parish

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

337 Area code 337

Where Jefferson Davis Parish's ZIP codes sit

Each point is the reference point of one Jefferson Davis 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 Jefferson Davis 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.