58 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 95035 | Milpitas | 78,479 |
| 95123 | San Jose | 70,279 |
| 95020 | Gilroy | 67,945 |
| 95051 | Santa Clara | 61,345 |
| 95014 | Cupertino | 61,109 |
| 95127 | San Jose | 61,091 |
| 95111 | San Jose | 58,885 |
| 94087 | Sunnyvale | 58,126 |
| 95112 | San Jose | 56,766 |
| 95125 | San Jose | 53,934 |
| 95122 | San Jose | 52,206 |
| 95124 | San Jose | 51,991 |
| 95037 | Morgan Hill | 51,517 |
| 94086 | Sunnyvale | 48,956 |
| 95116 | San Jose | 48,816 |
| 95008 | Campbell | 48,415 |
| 95136 | San Jose | 47,157 |
| 94303 | Palo Alto | 47,123 |
| 95148 | San Jose | 45,392 |
| 95129 | San Jose | 40,896 |
| 95050 | Santa Clara | 39,827 |
| 95132 | San Jose | 39,605 |
| 95126 | San Jose | 38,239 |
| 95120 | San Jose | 38,103 |
| 95121 | San Jose | 35,722 |
| 94040 | Mountain View | 35,581 |
| 95128 | San Jose | 33,585 |
| 94043 | Mountain View | 32,042 |
| 95118 | San Jose | 31,831 |
| 95070 | Saratoga | 31,383 |
| 95131 | San Jose | 30,745 |
| 95134 | San Jose | 30,255 |
| 95133 | San Jose | 28,561 |
| 95117 | San Jose | 27,798 |
| 95032 | Los Gatos | 27,682 |
| 94306 | Palo Alto | 27,527 |
| 95054 | Santa Clara | 25,196 |
| 94024 | Los Altos | 23,673 |
| 94089 | Sunnyvale | 23,214 |
| 94085 | Sunnyvale | 23,159 |
| 95135 | San Jose | 20,503 |
| 94022 | Los Altos | 19,993 |
| 95138 | San Jose | 19,513 |
| 95110 | San Jose | 19,444 |
| 94305 | Stanford | 17,912 |
| 94301 | Palo Alto | 17,126 |
| 94041 | Mountain View | 15,841 |
| 95130 | San Jose | 13,491 |
| 95030 | Los Gatos | 12,969 |
| 95119 | San Jose | 10,449 |
| 95139 | San Jose | 7,113 |
| 95046 | San Martin | 6,766 |
| 94304 | Palo Alto | 4,731 |
| 95053 | Santa Clara | 3,153 |
| 95113 | San Jose | 2,443 |
| 95002 | Alviso | 1,639 |
| 95013 | Coyote | 42 |
| 95140 | Mount Hamilton | 41 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 58 ZCTAs in Santa Clara County, California (US Census).