ZIP Code 33042

33042 is one of Florida's ZIP codes, delivering to addresses in Summerland Key, Monroe County.

City: Summerland Key
County: Monroe County
State: Florida
Prefix: 330xx

Where this code sits

33042 is part of the 330xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Summerland Key.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 33042 delivers to without sharing its boundary.

ZIP codes nearest 33042

The ZIP codes whose reference points sit closest to 33042.
ZIP code	Distance	Delivers to
ZIP code 33043	9.3 mi	Big Pine Key, FL
ZIP code 33040	19 mi	Key West, FL
ZIP code 33041	19 mi	Key West, FL
ZIP code 33045	19 mi	Key West, FL
ZIP code 33052	28 mi	Marathon Shores, FL
ZIP code 33050	30 mi	Marathon, FL
ZIP code 33051	31 mi	Key Colony Beach, FL
ZIP code 33001	46 mi	Long Key, 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 33042, plotted from its record coordinates.

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

Scope ZIP code 33042. 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.