East Chicago Indiana ZIP Codes
East Chicago holds a single ZIP code.
Every ZIP code in East Chicago
| ZIP code | County |
|---|---|
| 46312 | Lake 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We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP.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 East Chicago codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for East Chicago. 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 East Chicago 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 East Chicago accounts for 2% of it.
Every Indiana ZIP prefix and the region it covers →
Area codes covering East Chicago
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 East Chicago occupies.
East Chicago Indiana area codes in full →
Where East Chicago's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near East Chicago
| City | Distance | ZIP codes |
|---|---|---|
| Whiting Indiana ZIP codes | 2.4 mi | 1 ZIP code |
| Hammond Indiana ZIP codes | 3.0 mi | 5 ZIP codes |
| Gary Indiana ZIP codes | 6.8 mi | 8 ZIP codes |
| Highland Indiana ZIP codes | 7.0 mi | 1 ZIP code |
| Munster Indiana ZIP codes | 7.5 mi | 1 ZIP code |
| Griffith Indiana ZIP codes | 8.5 mi | 1 ZIP code |
| Dyer Indiana ZIP codes | 11 mi | 1 ZIP code |
| Schererville Indiana ZIP codes | 11 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.