ZIP Code 46323

46323 is one of Indiana's ZIP codes, delivering to addresses in Hammond, Lake County.

City: Hammond
County: Lake County
State: Indiana
Prefix: 463xx

Where this code sits

46323 is part of the 463xx range, the group of codes handled by one mail processing centre. Hammond is served by 5 ZIP codes in total; the full list, with the county each falls in, is on the Hammond page.

Hammond Indiana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 46323 delivers to without sharing its boundary.

219 Area code 219

ZIP codes nearest 46323

The ZIP codes whose reference points sit closest to 46323.
ZIP code	Distance	Delivers to
ZIP code 46406	2.4 mi	Gary, IN
ZIP code 46324	2.6 mi	Hammond, IN
ZIP code 46322	2.6 mi	Highland, IN
ZIP code 46320	3.2 mi	Hammond, IN
ZIP code 46312	3.3 mi	East Chicago, IN
ZIP code 46321	3.4 mi	Munster, IN
ZIP code 46319	4.1 mi	Griffith, IN
ZIP code 46404	4.1 mi	Gary, IN

Straight-line distance between place reference points, not driving distance. Where a place has no Census Gazetteer point, its postal centroid is used instead.

Each point is the reference point for 46323, plotted from its record coordinates.

Reference points and footprint
Not an official NANPA boundary
Not a USPS delivery area

Scope ZIP code 46323. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated 15 July 2026. A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.