ZIP Code 93440

93440 is one of California's ZIP codes, delivering to addresses in Los Alamos, Santa Barbara County.

City: Los Alamos
County: Santa Barbara County
State: California
Prefix: 934xx

Where this code sits

93440 is part of the 934xx range, the group of codes handled by one mail processing centre. It is the only ZIP code delivering to Los Alamos.

Area codes over the same ground

Postal and telephone geography are drawn separately, so these codes cover the area 93440 delivers to without sharing its boundary.

ZIP codes nearest 93440

The ZIP codes whose reference points sit closest to 93440.
ZIP code	Distance	Delivers to
ZIP code 93463	7.0 mi	Solvang, CA
ZIP code 93464	7.2 mi	Solvang, CA
ZIP code 93441	7.4 mi	Los Olivos, CA
ZIP code 93427	8.7 mi	Buellton, CA
ZIP code 93460	11 mi	Santa Ynez, CA
ZIP code 93455	14 mi	Santa Maria, CA
ZIP code 93436	15 mi	Lompoc, CA
ZIP code 93438	16 mi	Lompoc, 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 93440, plotted from its record coordinates.

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

Scope ZIP code 93440. 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.