ZIP Code 46303

46303 is one of Indiana's ZIP codes, delivering to addresses in Cedar Lake, Lake County.

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

Where this code sits

46303 is part of the 463xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Cedar Lake.

Cedar Lake Indiana ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 46303 delivers to without sharing its boundary.

219 Area code 219

ZIP codes nearest 46303

The ZIP codes whose reference points sit closest to 46303.
ZIP code	Distance	Delivers to
ZIP code 46373	5.4 mi	Saint John, IN
ZIP code 46308	6.6 mi	Crown Point, IN
ZIP code 46356	6.7 mi	Lowell, IN
ZIP code 46307	7.2 mi	Crown Point, IN
ZIP code 60401	7.2 mi	Beecher, IL
ZIP code 60417	8.0 mi	Crete, IL
ZIP code 46325	8.2 mi	Hammond, IN
ZIP code 46411	8.2 mi	Merrillville, 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 46303, plotted from its record coordinates.

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

Scope ZIP code 46303. 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.