Porter County ZIP Codes

Porter County is a county of Indiana.

ZIP codes: 10
Cities & towns: 8
Area codes: 1
Land area: 418 sq mi

Every ZIP code in Porter County

463xx

The complete list of Porter County, IN ZIP codes with the city each one delivers to.
ZIP code	City
46301	Beverly Shores
46302	Boone Grove
46304	Chesterton
46341	Hebron
46347	Kouts
46368	Portage
46383	Valparaiso
46384	Valparaiso
46385	Valparaiso
46393	Wheeler

We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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

Cities and towns in Porter County

A further 2 places in Porter County 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 Porter County

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

219 Area code 219

Where Porter County's ZIP codes sit

Each point is the reference point of one Porter County 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 Porter County. 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.