29 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 93033 | Oxnard | 78,737 |
| 93065 | Simi Valley | 73,534 |
| 93030 | Oxnard | 58,192 |
| 93063 | Simi Valley | 55,066 |
| 93003 | Ventura | 52,906 |
| 93036 | Oxnard | 49,394 |
| 93010 | Camarillo | 46,748 |
| 91320 | Newbury Park | 43,472 |
| 91360 | Thousand Oaks | 42,236 |
| 93021 | Moorpark | 37,746 |
| 91362 | Thousand Oaks | 35,996 |
| 93012 | Camarillo | 35,791 |
| 93060 | Santa Paula | 34,501 |
| 93001 | Ventura | 32,026 |
| 93004 | Ventura | 30,698 |
| 93035 | Oxnard | 26,853 |
| 93041 | Port Hueneme | 23,273 |
| 93023 | Ojai | 21,036 |
| 93015 | Fillmore | 19,191 |
| 91361 | Westlake Village | 18,802 |
| 91377 | Oak Park | 13,757 |
| 93022 | Oak View | 6,078 |
| 93225 | Frazier Park | 4,663 |
| 93066 | Somis | 2,898 |
| 93040 | Piru | 1,799 |
| 93252 | Maricopa | 1,295 |
| 93043 | Port Hueneme Cbc Base | 468 |
| 93042 | Point Mugu Nawc | 99 |
| 93064 | Brandeis | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 29 ZCTAs in Ventura County, California (US Census).