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Santa Clara County, California

Low risk

Gera County Health Risk Index: 18.3/100 · National rank 468 of 480 · Population: 1,877,592 · CDC PLACES June 2026

What is the chronic-disease health risk in Santa Clara County, California?

As of June 2026, Santa Clara County, California has a Gera County Health Risk Index of 18.3/100 (national rank 468/480; low risk). Adult chronic-disease prevalence: obesity 21.9%, diabetes 10.5%, coronary heart disease 4.5%, smoking 8.1%. Source: CDC PLACES June 2026.

Source:CDC PLACES: Local Data for Better Health, County Data 2023 release·as of June 2026updated annually (last: )
Gera County Health Risk Index18.3 / 100Rank 468 of 480 most-populous US counties. Computed from CDC PLACES June 2026 crude prevalence for 4 chronic-disease measures, weighted and normalised 0–100. Higher = higher risk.How this index is calculated

Chronic-disease prevalence — Santa Clara County (CDC PLACES June 2026)

Santa Clara County, California — CDC PLACES June 2026 crude prevalence (adults)
MeasurePrevalenceWeight in GCHRI
Obesity21.9%25%
Diagnosed diabetes10.5%25%
Coronary heart disease4.5%30%
Current cigarette smoking8.1%20%
GCHRI composite score18.3 / 100—

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Search any of the 480 most-populous US counties to compare GCHRI scores and CDC prevalence rates.

Santa Clara County, California

Population: 1,877,592 · National rank: 468 / 480 (by chronic-disease risk)

Low risk

Gera County Health Risk Index

18.3 / 100

Obesity

21.9%

adults

Diabetes

10.5%

adults

Heart Disease

4.5%

adults

Smoking

8.1%

adults

Source: CDC PLACES, June 2026 · Crude prevalence, adults · Full county page →

Other counties in California

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Frequently asked questions

What is the Gera County Health Risk Index for Santa Clara County, CA?
Santa Clara County, CA has a Gera County Health Risk Index (GCHRI) of 18.3/100, ranking 468 out of 480 most-populous US counties (rank 1 = highest chronic-disease risk). This places it in the low-risk tier. Source: CDC PLACES (June 2026).
What is the obesity rate in Santa Clara County?
The adult obesity prevalence in Santa Clara County, CA is 21.9% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 21.9%.
What is the diabetes rate in Santa Clara County?
The diagnosed diabetes prevalence among adults in Santa Clara County, CA is 10.5% (CDC PLACES, June 2026, crude prevalence).
What is the coronary heart disease rate in Santa Clara County?
The coronary heart disease prevalence among adults in Santa Clara County, CA is 4.5% (CDC PLACES, June 2026, crude prevalence).
What is the smoking rate in Santa Clara County?
The current cigarette smoking prevalence among adults in Santa Clara County, CA is 8.1% (CDC PLACES, June 2026, crude prevalence).

Concerned about health risks in Santa Clara County?

A GeraClinic care navigator can help you understand what these CDC chronic-disease rates mean for you personally, assess your individual risk factors, and connect you with preventive-care resources — fully online.

Talk to a GeraClinic care navigatorHow the Gera County Health Risk Index is calculated

Contains public sector information published by U.S. Centers for Disease Control and Prevention (CDC) and licensed under the U.S. Public Domain (federal government work, 17 U.S.C. § 105). Source: CDC PLACES: Local Data for Better Health, County Data 2023 release (June 2026, published 2023 (released 2024)).

Informational/educational only — not a substitute for professional medical advice; a clinician interprets results.