Is Santa Clara County, CA's population growing or shrinking?
Refreshed annually
It grew by 6,500 between 2024 and 2025. Changes in population can reflect birth and death rates, immigration patterns, regional shifts, and even the overall health of the economy. The 0.34% annual increase was primarily driven by immigration to the state.
In the decade between 2015 and 2025, Santa Clara County, CA’s population shrank by 0.07%.
+6.48K
population change (2024 to 2025)
+0.34%
percent change in population (2024 to 2025)
Since 2000, Santa Clara County, CA’s population increased 19 out of 25 years. The largest increase occurred between 2007 and 2008, when Santa Clara County, CA gained 31,800 residents. Its largest decline occurred between 2020 and 2021 when there were 48,800 fewer residents.
Santa Clara County, CA gained 6,500 residents between 2024 and 2025.
Annual population change, 2001–2025
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What contributes to population change in Santa Clara County, CA?
A county’s population is influenced by three factors:
- Natural population change: If births outnumber deaths in a given year, natural population growth is positive. If deaths exceed births, it is negative. Between 2024 and 2025 natural population change was positive in Santa Clara County, CA, with births exceeding deaths by 7,600.
- Immigration: international migration directly into or out of a county: If more people move in than move out, population change from immigration is positive. If more people move out than move in, it’s negative. Between 2024 to 2025, Santa Clara County, CA’s population change from immigration was positive with about 18,700 more people coming from another country directly to Santa Clara County, CA than leaving.
- Domestic migration, moving between counties: Between 2024 to 2025, Santa Clara County, CA’s population change from domestic migration was negative with about 19,800 more people moving to any other county in the US.
Between 2024 and 2025, immigration was the primary driver of population growth in Santa Clara County, CA.
Components of population change from previous year, 2011–2025
How is the US population changing?
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
