ZIP Code 92173

92173 is one of California's ZIP codes, delivering to addresses in San Ysidro, San Diego County.

City: San Ysidro
County: San Diego County
State: California
Prefix: 921xx

Where this code sits

92173 is part of the 921xx range, the group of codes handled by one mail processing centre. San Ysidro is served by 2 ZIP codes in total.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 92173 delivers to without sharing its boundary.

ZIP codes nearest 92173

The ZIP codes whose reference points sit closest to 92173.
ZIP code	Distance	Delivers to
ZIP code 92154	1.8 mi	San Diego, CA
ZIP code 91911	3.3 mi	Chula Vista, CA
ZIP code 91932	4.3 mi	Imperial Beach, CA
ZIP code 91933	4.3 mi	Imperial Beach, CA
ZIP code 91910	5.3 mi	Chula Vista, CA
ZIP code 91909	5.9 mi	Chula Vista, CA
ZIP code 91912	5.9 mi	Chula Vista, CA
ZIP code 91921	5.9 mi	Chula Vista, CA

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 92173, plotted from its record coordinates.

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

Scope ZIP code 92173. 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.