ZIP Code 33421

33421 is one of Florida's ZIP codes, delivering to addresses in Royal Palm Beach, Palm Beach County.

City: Royal Palm Beach
County: Palm Beach County
State: Florida
Prefix: 334xx

Where this code sits

33421 is part of the 334xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Royal Palm Beach.

Royal Palm Beach Florida ZIP codes →

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 33421 delivers to without sharing its boundary.

ZIP codes nearest 33421

The ZIP codes whose reference points sit closest to 33421.
ZIP code	Distance	Delivers to
ZIP code 33470	3.5 mi	Loxahatchee, FL
ZIP code 33414	3.5 mi	Wellington, FL
ZIP code 33411	4.6 mi	West Palm Beach, FL
ZIP code 33413	5.7 mi	West Palm Beach, FL
ZIP code 33417	6.6 mi	West Palm Beach, FL
ZIP code 33412	6.8 mi	West Palm Beach, FL
ZIP code 33449	7.2 mi	Lake Worth, FL
ZIP code 33415	7.4 mi	West Palm Beach, FL

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 33421, plotted from its record coordinates.

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

Scope ZIP code 33421. 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.