ZIP Code 42003

42003 is one of Kentucky's ZIP codes, delivering to addresses in Paducah, McCracken County.

City: Paducah
County: McCracken County
State: Kentucky
Prefix: 420xx

Where this code sits

42003 is part of the 420xx range, the group of codes handled by one mail processing centre. Paducah is served by 3 ZIP codes in total; the full list, with the county each falls in, is on the Paducah page.

Paducah Kentucky ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 42003 delivers to without sharing its boundary.

ZIP codes nearest 42003

The ZIP codes whose reference points sit closest to 42003.
ZIP code	Distance	Delivers to
ZIP code 42001	4.3 mi	Paducah, KY
ZIP code 42058	7.2 mi	Ledbetter, KY
ZIP code 42002	7.4 mi	Paducah, KY
ZIP code 42027	7.5 mi	Boaz, KY
ZIP code 62910	8.8 mi	Brookport, IL
ZIP code 42086	10 mi	West Paducah, KY
ZIP code 42082	10 mi	Symsonia, KY
ZIP code 42029	12 mi	Calvert City, KY

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 42003, plotted from its record coordinates.

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

Scope ZIP code 42003. 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.