Portage Indiana ZIP Codes
Portage holds a single ZIP code.
Every ZIP code in Portage
| ZIP code | County |
|---|---|
| 46368 | Porter County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Portage codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Portage. 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 Portage ZIP code begins 463. Those first three digits identify the sectional center facility that processes mail for this part of Indiana. Statewide that range covers 53 ZIP codes, so Portage accounts for 2% of it.
Every Indiana ZIP prefix and the region it covers →
Area codes covering Portage
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 Portage occupies.
Portage Indiana area codes in full →
Where Portage's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Portage
| City | Distance | ZIP codes |
|---|---|---|
| Lake Station Indiana ZIP codes | 4.0 mi | 1 ZIP code |
| Chesterton Indiana ZIP codes | 6.4 mi | 1 ZIP code |
| Hobart Indiana ZIP codes | 7.4 mi | 1 ZIP code |
| Gary Indiana ZIP codes | 8.7 mi | 8 ZIP codes |
| Valparaiso Indiana ZIP codes | 10 mi | 3 ZIP codes |
| Merrillville Indiana ZIP codes | 11 mi | 2 ZIP codes |
| Beverly Shores Indiana ZIP codes | 12 mi | 1 ZIP code |
| Griffith Indiana ZIP codes | 13 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.