First three digits · California
ZIP Codes Starting with
53 ZIP codes start with 934, sorted at the Santa Barbara, CA (SCF 931) sectional center (USPS labeling list L005, effective October 1, 2026) in California: 38 residential ZIP codes across 3 counties and 15 PO Box or single-organization codes (Census 2020 ZCTAs and GeoNames postal codes, October 2026).
What do the digits 934 mean?
The first digit, 9, is one of ten national areas (Alaska, California, Hawaii, Oregon, Washington, American Samoa, Guam, Northern Mariana Islands, Marshall Islands, Micronesia, Palau and Armed Forces Pacific). The first three, 934, route mail to a sectional center: USPS labeling list L005 (effective October 1, 2026) sends letters for 934 to the Santa Barbara, CA (SCF 931) facility. The last two digits pick the delivery area. By residents, the largest town names among the 934 ZIP codes are Santa Maria, San Luis Obispo, Lompoc, Paso Robles, Atascadero and Arroyo Grande.
The same facility sorts 3 prefixes, 116 ZIP codes in all: 930, 931, 934.
Where are the 934 ZIP codes?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
All ZIP codes starting with 934
| County | ||||||
|---|---|---|---|---|---|---|
| 93401 | San Luis Obispo | San Luis Obispo County | 29,202 | 455 | $97k | $973k |
| 93402 | Los Osos | San Luis Obispo County | 14,197 | 512 | $109k | $807k |
| 93403 | San Luis Obispo | San Luis Obispo County | PO Box or unique | – | – | – |
| 93405 | San Luis Obispo | San Luis Obispo County | 25,002 | 279 | $60k | $950k |
| 93406 | San Luis Obispo | San Luis Obispo County | PO Box or unique | – | – | – |
| 93407 | San Luis Obispo | San Luis Obispo County | 347 | 408 | – | – |
| 93408 | San Luis Obispo | San Luis Obispo County | 6 | 273 | – | – |
| 93409 | San Luis Obispo | San Luis Obispo County | 2,952 | 7,380 | – | – |
| 93410 | San Luis Obispo | San Luis Obispo County | 7,396 | 16,963 | – | – |
| 93412 | Los Osos | San Luis Obispo County | PO Box or unique | – | – | – |
| 93420 | Arroyo Grande | San Luis Obispo County | 31,345 | 159 | $111k | $918k |
| 93421 | Arroyo Grande | San Luis Obispo County | PO Box or unique | – | – | – |
| 93422 | Atascadero | San Luis Obispo County | 33,002 | 480 | $92k | $738k |
| 93423 | Atascadero | San Luis Obispo County | PO Box or unique | – | – | – |
| 93424 | Avila Beach | San Luis Obispo County | 962 | 48 | – | $1.19M |
| 93426 | Bradley | Monterey County | 1,564 | 7 | $103k | $458k |
| 93427 | Buellton | Santa Barbara County | 5,737 | 83 | $103k | $868k |
| 93428 | Cambria | San Luis Obispo County | 6,399 | 83 | $100k | $933k |
| 93429 | Casmalia | Santa Barbara County | 99 | 14 | $169k | – |
| 93430 | Cayucos | San Luis Obispo County | 3,125 | 44 | $90k | $1.02M |
| 93432 | Creston | San Luis Obispo County | 1,142 | 14 | $147k | $886k |
| 93433 | Grover Beach | San Luis Obispo County | 12,600 | 5,823 | $87k | $728k |
| 93434 | Guadalupe | Santa Barbara County | 8,603 | 377 | $67k | $499k |
| 93435 | Harmony | San Luis Obispo County | PO Box or unique | – | – | – |
| 93436 | Lompoc | Santa Barbara County | 55,820 | 245 | $80k | $504k |
| 93437 | Lompoc | Santa Barbara County | 3,477 | 70 | $84k | – |
| 93438 | Lompoc | Santa Barbara County | PO Box or unique | – | – | – |
| 93440 | Los Alamos | Santa Barbara County | 1,185 | 27 | $79k | $831k |
| 93441 | Los Olivos | Santa Barbara County | 1,134 | 29 | $143k | $1.5M |
| 93442 | Morro Bay | San Luis Obispo County | 11,571 | 260 | $96k | $919k |
| 93443 | Morro Bay | San Luis Obispo County | PO Box or unique | – | – | – |
| 93444 | Nipomo | San Luis Obispo County | 21,611 | 330 | $111k | $816k |
| 93445 | Oceano | San Luis Obispo County | 6,857 | 403 | $72k | $574k |
| 93446 | Paso Robles | San Luis Obispo County | 45,554 | 106 | $98k | $708k |
| 93447 | Paso Robles | San Luis Obispo County | PO Box or unique | – | – | – |
| 93448 | Pismo Beach | San Luis Obispo County | PO Box or unique | – | – | – |
| 93449 | Pismo Beach | San Luis Obispo County | 8,014 | 809 | $118k | $1.02M |
| 93450 | San Ardo | Monterey County | 668 | 4 | – | $461k |
| 93451 | San Miguel | Monterey County | 5,207 | 12 | $98k | $653k |
| 93452 | San Simeon | San Luis Obispo County | 217 | 2 | $55k | $443k |
| 93453 | Santa Margarita | San Luis Obispo County | 2,344 | 3 | $78k | $710k |
| 93454 | Santa Maria | Santa Barbara County | 41,896 | 100 | $82k | $525k |
| 93455 | Santa Maria | Santa Barbara County | 44,611 | 377 | $111k | $610k |
| 93456 | Santa Maria | Santa Barbara County | PO Box or unique | – | – | – |
| 93457 | Santa Maria | Santa Barbara County | PO Box or unique | – | – | – |
| 93458 | Santa Maria | Santa Barbara County | 59,148 | 2,081 | $75k | $512k |
| 93460 | Santa Ynez | Santa Barbara County | 6,039 | 27 | $114k | $1.21M |
| 93461 | Shandon | San Luis Obispo County | 1,548 | 5 | $93k | $467k |
| 93463 | Solvang | Santa Barbara County | 8,130 | 240 | $119k | $1.11M |
| 93464 | Solvang | Santa Barbara County | PO Box or unique | – | – | – |
| 93465 | Templeton | San Luis Obispo County | 11,039 | 130 | $129k | $870k |
| 93475 | Oceano | San Luis Obispo County | PO Box or unique | – | – | – |
| 93483 | Grover Beach | San Luis Obispo County | PO Box or unique | – | – | – |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; GeoNames postal codes (CC BY 4.0) for codes without a residential area.