Average IQ in California

    Average IQ

    101.5

    US Ranking

    #14

    of 50 states

    Region

    West

    Note: State-level IQ estimates are derived from standardized test scores (NAEP, SAT, ACT) and demographic data. They reflect population-level trends influenced by education funding, socioeconomic factors, and demographics — not the intelligence of any individual resident.

    About California's IQ Ranking

    California's ranking reflects its extraordinary diversity — the state contains both the world's most innovative tech hub (Silicon Valley) and some of the nation's most impoverished communities. California has more top-100 universities than any other state and leads in patents and innovation, yet also has significant achievement gaps along socioeconomic and geographic lines. The state's average masks enormous internal variation.

    For global context, see how the US compares in our United States IQ page and the full country rankings.

    California vs Other West States

    StateAverage IQUS Rank
    California101.5#14
    Oregon103.4#6
    Washington102.9#7
    Montana103.4#7
    Colorado102.5#11
    Wyoming102.4#11
    Idaho101.4#15
    Utah101.1#17
    Hawaii99.4#25
    Alaska99#30
    Arizona97.4#38
    Nevada96.5#40
    New Mexico95#47

    Frequently Asked Questions

    What is the average IQ in California?

    California's estimated average IQ is 101.5, ranking #14. This average masks enormous variation — Silicon Valley's tech workforce scores well above average, while some rural and low-income communities score below.

    Why doesn't California rank higher given Silicon Valley?

    California's vast size and diversity pull its average toward the middle. While the Bay Area and LA have extremely educated populations, the state also has large agricultural regions and communities with limited educational access.

    How does California compare to Texas?

    California (101.5) outranks Texas (99.6). California has more top universities and a larger tech sector, while Texas has been closing the gap through economic growth and in-migration of educated workers.

    Explore Other States

    Massachusetts (104.3)New Hampshire (104.2)Vermont (103.8)Connecticut (103.1)Minnesota (103.7)Oregon (103.4)Maine (103.4)Washington (102.9)

    Take our free IQ test to see how you compare, or learn what IQ actually measures.

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