ZIP Code 91963

91963 is one of California's ZIP codes, delivering to addresses in Potrero, San Diego County.

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

Where this code sits

91963 is part of the 919xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Potrero.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 91963 delivers to without sharing its boundary.

ZIP codes nearest 91963

The ZIP codes whose reference points sit closest to 91963.
ZIP code	Distance	Delivers to
ZIP code 91980	2.4 mi	Tecate, CA
ZIP code 91987	3.3 mi	Tecate, CA
ZIP code 91906	7.1 mi	Campo, CA
ZIP code 91917	7.3 mi	Dulzura, CA
ZIP code 91935	15 mi	Jamul, CA
ZIP code 91962	16 mi	Pine Valley, CA
ZIP code 91931	16 mi	Guatay, CA
ZIP code 91901	17 mi	Alpine, 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 91963, plotted from its record coordinates.

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

Scope ZIP code 91963. 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.