Chesterton Indiana ZIP Codes
Chesterton holds a single ZIP code.
Every ZIP code in Chesterton
| ZIP code | County |
|---|---|
| 46304 | 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 Chesterton codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Chesterton. 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 Chesterton 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 Chesterton accounts for 2% of it.
Every Indiana ZIP prefix and the region it covers →
Area codes covering Chesterton
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 Chesterton occupies.
Chesterton Indiana area codes in full →
Where Chesterton's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Chesterton
| City | Distance | ZIP codes |
|---|---|---|
| Portage Indiana ZIP codes | 6.4 mi | 1 ZIP code |
| Beverly Shores Indiana ZIP codes | 7.4 mi | 1 ZIP code |
| Valparaiso Indiana ZIP codes | 8.3 mi | 3 ZIP codes |
| Westville Indiana ZIP codes | 8.9 mi | 1 ZIP code |
| Lake Station Indiana ZIP codes | 10 mi | 1 ZIP code |
| Michigan City Indiana ZIP codes | 12 mi | 2 ZIP codes |
| Hobart Indiana ZIP codes | 13 mi | 1 ZIP code |
| Wanatah Indiana ZIP codes | 14 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.