ZIP Code 91916

91916 is one of California's ZIP codes, delivering to addresses in Descanso, San Diego County.

City: Descanso
County: San Diego County
State: California
Prefix: 919xx

Where this code sits

91916 is part of the 919xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Descanso.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 91916 delivers to without sharing its boundary.

ZIP codes nearest 91916

The ZIP codes whose reference points sit closest to 91916.
ZIP code	Distance	Delivers to
ZIP code 91931	3.0 mi	Guatay, CA
ZIP code 91962	5.8 mi	Pine Valley, CA
ZIP code 91901	9.3 mi	Alpine, CA
ZIP code 91903	9.9 mi	Alpine, CA
ZIP code 91948	11 mi	Mount Laguna, CA
ZIP code 92036	13 mi	Julian, CA
ZIP code 91906	16 mi	Campo, CA
ZIP code 91935	17 mi	Jamul, 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 91916, plotted from its record coordinates.

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

Scope ZIP code 91916. 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.