ZIP Code 93423
93423 is one of California's ZIP codes, delivering to addresses in Atascadero, San Luis Obispo County.
- City
- Atascadero
- County
- San Luis Obispo County
- State
- California
- Prefix
- 934xx
Where this code sits
93423 is part of the 934xx range, the group of codes handled by one mail processing centre. Atascadero is served by 2 ZIP codes in total; the full list, with the county each falls in, is on the Atascadero page.
Atascadero California ZIP codes →
Area codes over the same ground
Postal and telephone geography are drawn separately, so these codes cover the area 93423 delivers to without sharing its boundary.
ZIP codes nearest 93423
| ZIP code | Distance | Delivers to |
|---|---|---|
| ZIP code 93442 | 5.4 mi | Morro Bay, CA |
| ZIP code 93443 | 6.3 mi | Morro Bay, CA |
| ZIP code 93422 | 6.8 mi | Atascadero, CA |
| ZIP code 93430 | 6.9 mi | Cayucos, CA |
| ZIP code 93402 | 8.5 mi | Los Osos, CA |
| ZIP code 93412 | 8.8 mi | Los Osos, CA |
| ZIP code 93465 | 9.4 mi | Templeton, CA |
| ZIP code 93405 | 11 mi | San Luis Obispo, 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.
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope ZIP code 93423. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . A ZIP code is a set of delivery routes, not an area; the point shown is a record coordinate, not a centre.