ZIP Code 92378

92378 is one of California's ZIP codes, delivering to addresses in Rimforest, San Bernardino County.

City: Rimforest
County: San Bernardino County
State: California
Prefix: 923xx

Where this code sits

92378 is part of the 923xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Rimforest.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 92378 delivers to without sharing its boundary.

ZIP codes nearest 92378

The ZIP codes whose reference points sit closest to 92378.
ZIP code	Distance	Delivers to
ZIP code 92391	0.8 mi	Twin Peaks, CA
ZIP code 92352	2.5 mi	Lake Arrowhead, CA
ZIP code 92385	2.6 mi	Skyforest, CA
ZIP code 92325	3.3 mi	Crestline, CA
ZIP code 92321	4.4 mi	Cedar Glen, CA
ZIP code 92322	6.0 mi	Cedarpines Park, CA
ZIP code 92404	6.4 mi	San Bernardino, CA
ZIP code 92369	6.5 mi	Patton, 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 92378, plotted from its record coordinates.

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

Scope ZIP code 92378. 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.