Santa Clara County lies at the southern end of San Francisco Bay and includes San Jose, Sunnyvale, Santa Clara, Cupertino, and Mountain View. San Jose is the county seat, and much of the county is commonly associated with Silicon Valley.
Santa Clara County facts
County estimates: American Community Survey (ACS) 2020–2024 5-year release. Boundary and land area: U.S. Census Bureau TIGERweb. Data may change as sources are updated.
Interactive Santa Clara County map
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Map tiles © OpenStreetMap contributors. Map boundaries are not legal property lines. Scroll-wheel zoom is disabled to make page scrolling easier.
Where is Santa Clara County?
Santa Clara County lies at the southern end of San Francisco Bay and includes San Jose, Sunnyvale, Santa Clara, Cupertino, and Mountain View. San Jose is the county seat, and much of the county is commonly associated with Silicon Valley.
The county includes dense urban and suburban communities as well as open spaces and mountainous terrain around the valley. Its income and home-value estimates describe the whole county, rather than a particular technology campus or residential district.
Santa Clara County is distinct from the City of Santa Clara and from neighboring San Mateo and Alameda counties. A postal address with a recognizable Silicon Valley city name does not eliminate the need to confirm its county and municipality for official purposes.
Santa Clara County FIPS code and county seat
Santa Clara County’s five-digit FIPS code is 06085. Its first two digits, 06, identify California; the last three digits, 085, identify the county. The full five-digit code should be retained when joining public geographic datasets.
San Jose is the county seat. The county seat is the administrative center for county government. It does not necessarily represent the largest city or the location of every service. County FIPS identifiers should not be confused with ZIP Codes, city boundaries, or school districts.
Population, household income, and housing estimates
Population, median household income, median home value, median age, and poverty data on this page are drawn from the 2020–2024 American Community Survey (ACS) five-year release. These are estimates, with sampling error, rather than a real-time census. Household income and owner-occupied home value use the inflation-adjusted dollar basis of the ACS release. A countywide median is not a quote for an individual household or property.
County boundary and land-area data use the Census Bureau’s TIGERweb geography layer. Population density is calculated from the ACS population estimate and mapped land area. Geographic boundaries may have a different vintage from demographic data, so small differences between data sources are possible. Land-area figures exclude water area.
How to use the interactive county map
Use the interactive map above to inspect the county’s outline. Drag to pan and use the zoom buttons to explore the boundary in its wider region. The map is a general geographic reference: it is not a legal survey, tax-parcel map, flood map, election precinct map, or emergency-service boundary. Consult the relevant government authority before making jurisdictional decisions.
If the county boundary service cannot load, the map area displays a status message. The county seat and FIPS code remain visible without the external services.
Compare Santa Clara County with other California counties
You can explore Alameda County and San Francisco County, or use the side-by-side county comparison tool to select two counties and compare income, population, housing, and density. Differences in medians and area do not by themselves establish which county is better for every household or business.
Frequently asked questions
Are San Jose and the City of Santa Clara the same place?
No. They are separate cities within Santa Clara County. San Jose is the county seat, while Santa Clara is another incorporated city.
What is the county FIPS code for Santa Clara County?
The five-digit code is 06085. You can search it with our County FIPS Code Lookup tool. Leading zeros, when present, are part of the identifier.
Why might the county population or map show unavailable?
The statistics and map load from external Census-related services. If the services fail or load slowly, the page shows an unavailable or retry message rather than an invented value. For more detail, visit Data and Methodology.
Sources and related county tools
Sources: U.S. Census Bureau ACS, Census TIGERweb, and Census QuickFacts. You can also explore the California county directory, ZIP Code to County Finder, and What County Am I In? tool.