| ZIP Codes: | 109 ZIP Codes (58 Standard, 44 PO Box, 7 Unique) [See All] |
| Area Codes: | 341 / 408 / 510 / 650 / 669 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:11:30 PM |
| Population: | 1,935,981 [See All] |
| FIPS: | 06085 |
| CBSA: | San Jose-Sunnyvale-Santa Clara, CA |
| Land Area: | 1,040 sq mi |
| Water Area: | 6 sq mi |
| Coordinates: | 37.3179, -121.9189 |
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1,935,981 residents live across 109 ZIPs covering 1,040 sq mi, served by 21 distinct USPS-recognized cities.
Population moved from 1,874,940 to 1,935,981 from 2014 to 2024 — a +3.3% change. 38 ZIPs gained residents, 21 lost.
The county's wealthiest ZIP 95120 (San Jose, $250,001 median) and poorest ZIP 94305 (Stanford, $83,088) are 24.8 miles apart — a 3.0× income gap across local geography.
Median home values vary 5.2× across this county — from $387,800 in 94089 (Sunnyvale) to $2,000,001 in 95014 (Cupertino).
Density varies 165× across the county — from 108 people/sq mi in 95033 (Los Gatos) to 17,768 in 95053 (Santa Clara).
Most of the decade's growth concentrated around San Jose — top growth ZIPs averaged +81.7% over the past ten years ( 95113 , 95134 and 94305 ).
Educational attainment ranges from 19.0% bachelor's+ in 95122 (San Jose) to 92.2% in 94305 (Stanford) — the breadth of educational profiles across the area.
Within California, this is the #6 most populous of 58 counties and ranks #2 for median household income .
On the national stage, Santa Clara County is the #18 most populous US county , ranks #6 for income .
Hosts 4 single-entity Unique ZIPs: 95053Santa Clara University ; 95192San Jose State University ; 95190San Jose Mercury News ; and 95194California Water Service .
Weighted by population, the typical household earns about $165,946 across the county — reflecting what a typical resident sees, not a simple ZIP average.
56.1% of adults age 25+ hold a bachelor's degree or higher (769,280 of 1,370,981 reporting).
58 Standard delivery, 44 PO Box only, 7 single-entity Unique ZIPs serve this county.
27 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
7 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 3.0× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 95035 | Milpitas | Standard | 78,810 | $178,654 | 24.6 | 13.2% |
| 95123 | San Jose | Standard | 69,677 | $144,276 | 8.3 | 7.9% |
| 95020 | Gilroy | Standard | 67,181 | $137,117 | 141.8 | 12.6% |
| 95051 | Santa Clara | Standard | 62,054 | $196,690 | 6.5 | 14.1% |
| 95014 | Cupertino | Standard | 60,932 | $230,913 | 26.5 | -2.5% |
| 95127 | San Jose | Standard | 58,825 | $128,786 | 18.4 | -8.8% |
| 94087 | Sunnyvale | Standard | 57,767 | $207,742 | 6.6 | 4.6% |
| 95112 | San Jose | Standard | 57,373 | $89,103 | 7.3 | -0.2% |
| 95111 | San Jose | Standard | 57,202 | $101,435 | 6.0 | -6.1% |
| 95125 | San Jose | Standard | 54,419 | $160,738 | 7.2 | -0.5% |
| 95124 | San Jose | Standard | 52,096 | $185,926 | 6.6 | 7.4% |
| 95037 | Morgan Hill | Standard | 51,943 | $163,182 | 151.5 | 10.9% |
| 95122 | San Jose | Standard | 50,775 | $103,549 | 4.8 | -11.8% |
| 94086 | Sunnyvale | Standard | 49,746 | $177,054 | 4.4 | 5.7% |
| 95008 | Campbell | Standard | 48,333 | $141,131 | 6.5 | 6.2% |
| 95136 | San Jose | Standard | 48,056 | $142,433 | 5.2 | 14.8% |
| 95116 | San Jose | Standard | 48,042 | $85,818 | 3.6 | -8.7% |
| 94303 | Palo Alto | Standard | 46,879 | $151,609 | 8.4 | -0.6% |
| 95148 | San Jose | Standard | 44,995 | $167,257 | 7.7 | -4.3% |
| 95129 | San Jose | Standard | 41,321 | $195,708 | 4.6 | 2.0% |
| 95132 | San Jose | Standard | 40,334 | $178,611 | 32.2 | -2.2% |
| 95050 | Santa Clara | Standard | 39,834 | $138,466 | 5.6 | 5.6% |
| 95126 | San Jose | Standard | 38,327 | $128,983 | 3.3 | 10.7% |
| 95120 | San Jose | Standard | 36,967 | $250,001 | 39.3 | -1.9% |
| 95121 | San Jose | Standard | 36,463 | $150,605 | 4.5 | -5.5% |
| 94040 | Mountain View | Standard | 35,632 | $187,781 | 3.6 | 4.9% |
| 94043 | Mountain View | Standard | 33,176 | $203,298 | 9.0 | 13.3% |
| 95128 | San Jose | Standard | 33,165 | $131,152 | 3.9 | -10.4% |
| 95118 | San Jose | Standard | 32,015 | $152,682 | 4.1 | 1.4% |
| 95070 | Saratoga | Standard | 31,417 | $250,001 | 27.9 | 1.0% |
| 95131 | San Jose | Standard | 31,179 | $170,255 | 5.8 | 5.1% |
| 95134 | San Jose | Standard | 30,471 | $203,649 | 11.1 | 81.3% |
| 95133 | San Jose | Standard | 29,710 | $142,170 | 3.2 | 8.5% |
| 95032 | Los Gatos | Standard | 27,313 | $203,727 | 15.8 | 5.5% |
| 94306 | Palo Alto | Standard | 27,183 | $210,000 | 4.1 | 0.3% |
| 95117 | San Jose | Standard | 26,953 | $116,348 | 2.3 | -16.0% |
| 95054 | Santa Clara | Standard | 25,704 | $207,895 | 6.4 | 7.5% |
| 94085 | Sunnyvale | Standard | 24,024 | $192,417 | 3.3 | 0.3% |
| 94024 | Los Altos | Standard | 23,051 | $250,001 | 6.8 | 2.1% |
| 94089 | Sunnyvale | Standard | 22,699 | $158,304 | 6.1 | 10.9% |
| 95135 | San Jose | Standard | 20,129 | $190,750 | 69.3 | -5.7% |
| 94022 | Los Altos | Standard | 20,027 | $250,001 | 18.2 | 1.5% |
| 95110 | San Jose | Standard | 19,963 | $131,491 | 4.5 | 3.8% |
| 95138 | San Jose | Standard | 18,960 | $204,476 | 24.9 | -0.9% |
| 94305 | Stanford | Standard | 18,509 | $83,088 | 4.9 | 36.7% |
| 94301 | Palo Alto | Standard | 17,508 | $242,006 | 2.4 | 3.4% |
| 94041 | Mountain View | Standard | 16,050 | $178,558 | 1.6 | 18.4% |
| 95130 | San Jose | Standard | 13,511 | $159,556 | 1.5 | -7.2% |
| 95030 | Los Gatos | Standard | 13,151 | $250,001 | 10.5 | -2.1% |
| 95119 | San Jose | Standard | 10,841 | $174,375 | 4.3 | 2.3% |
| 95033 | Los Gatos | Standard | 9,600 | $189,118 | 89.1 | -0.3% |
| 95139 | San Jose | Standard | 7,035 | $178,790 | 1.2 | 6.1% |
| 95046 | San Martin | Standard | 6,324 | $158,550 | 19.1 | 0.3% |
| 94304 | Palo Alto | Standard | 5,000 | $154,141 | 2.3 | 35.6% |
| 95053 | Santa Clara | Unique | 3,049 | — | 0.2 | 11.7% |
| 95113 | San Jose | Standard | 2,640 | $151,685 | 0.3 | 127.0% |
| 95002 | Alviso | PO Box | 1,542 | $121,953 | 11.1 | -7.1% |
| 95013 | Coyote | PO Box | 57 | $173,646 | 1.3 | 78.1% |
| 95140 | Mount Hamilton | Standard | 42 | $163,594 | 105.5 | -82.0% |
| 94035 | Mountain View | PO Box | — | — | 2.2 | — |
| 95036 | Milpitas | PO Box | — | — | 0.0 | — |
| 94309 | Palo Alto | PO Box | — | — | 0.0 | — |
| 94302 | Palo Alto | PO Box | — | — | 0.0 | — |
| 94088 | Sunnyvale | PO Box | — | — | 0.0 | — |
| 95056 | Santa Clara | PO Box | — | — | 0.0 | — |
| 95152 | San Jose | PO Box | — | — | 0.0 | — |
| 95190 | San Jose | Unique | — | — | 0.0 | — |
| 94023 | Los Altos | PO Box | — | — | 0.0 | — |
| 95161 | San Jose | PO Box | — | — | 0.0 | — |
| 95101 | San Jose | Standard | — | — | 0.0 | — |
| 95194 | San Jose | Unique | — | — | 0.0 | — |
| 95115 | San Jose | PO Box | — | — | 0.0 | — |
| 94039 | Mountain View | PO Box | — | — | 0.0 | — |
| 94042 | Mountain View | PO Box | — | — | 0.0 | — |
| 95164 | San Jose | PO Box | — | — | 0.0 | — |
| 95160 | San Jose | PO Box | — | — | 0.0 | — |
| 95031 | Los Gatos | PO Box | — | — | 0.0 | — |
| 95021 | Gilroy | PO Box | — | — | 0.0 | — |
| 95038 | Morgan Hill | PO Box | — | — | 0.0 | — |
| 95044 | Redwood Estates | PO Box | — | — | 0.0 | — |
| 95026 | Holy City | PO Box | — | — | 0.0 | — |
| 95141 | San Jose | Standard | — | — | 10.2 | — |
| 95042 | New Almaden | PO Box | — | — | 0.0 | — |
| 95009 | Campbell | PO Box | — | — | 0.0 | — |
| 95150 | San Jose | PO Box | — | — | 0.0 | — |
| 95011 | Campbell | PO Box | — | — | 0.0 | — |
| 95153 | San Jose | PO Box | — | — | 0.0 | — |
| 95193 | San Jose | Unique | — | — | 0.0 | — |
| 95158 | San Jose | PO Box | — | — | 0.0 | — |
| 95154 | San Jose | PO Box | — | — | 0.0 | — |
| 95071 | Saratoga | PO Box | — | — | 0.0 | — |
| 95192 | San Jose | Unique | — | — | 0.1 | — |
| 95108 | San Jose | PO Box | — | — | 0.0 | — |
| 95109 | San Jose | PO Box | — | — | 0.0 | — |
| 95106 | San Jose | PO Box | — | — | 0.0 | — |
| 95103 | San Jose | PO Box | — | — | 0.0 | — |
| 95055 | Santa Clara | PO Box | — | — | 0.0 | — |
| 95052 | Santa Clara | PO Box | — | — | 0.0 | — |
| 95156 | San Jose | PO Box | — | — | 0.0 | — |
| 95173 | San Jose | PO Box | — | — | 0.0 | — |
| 95172 | San Jose | PO Box | — | — | 0.0 | — |
| 95191 | San Jose | Unique | — | — | 0.0 | — |
| 95196 | San Jose | Unique | — | — | 0.0 | — |
| 95159 | San Jose | PO Box | — | — | 0.0 | — |
| 95151 | San Jose | PO Box | — | — | 0.0 | — |
| 95015 | Cupertino | PO Box | — | — | 0.0 | — |
| 95155 | San Jose | PO Box | — | — | 0.0 | — |
| 95170 | San Jose | PO Box | — | — | 0.0 | — |
| 95157 | San Jose | PO Box | — | — | 0.0 | — |