San Mateo County, California
Low riskGera County Health Risk Index: 21.2/100 · National rank 459 of 480 · Population: 726,353 · CDC PLACES June 2026
What is the chronic-disease health risk in San Mateo County, California?
As of June 2026, San Mateo County, California has a Gera County Health Risk Index of 21.2/100 (national rank 459/480; low risk). Adult chronic-disease prevalence: obesity 22.3%, diabetes 10.6%, coronary heart disease 5.2%, smoking 8.0%. Source: CDC PLACES June 2026.
Chronic-disease prevalence — San Mateo County (CDC PLACES June 2026)
| Measure | Prevalence | Weight in GCHRI |
|---|---|---|
| Obesity | 22.3% | 25% |
| Diagnosed diabetes | 10.6% | 25% |
| Coronary heart disease | 5.2% | 30% |
| Current cigarette smoking | 8.0% | 20% |
| GCHRI composite score | 21.2 / 100 | — |
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San Mateo County, California
Population: 726,353 · National rank: 459 / 480 (by chronic-disease risk)
Gera County Health Risk Index
21.2 / 100
Obesity
22.3%
adults
Diabetes
10.6%
adults
Heart Disease
5.2%
adults
Smoking
8.0%
adults
Source: CDC PLACES, June 2026 · Crude prevalence, adults · Full county page →
Other counties in California
Frequently asked questions
- What is the Gera County Health Risk Index for San Mateo County, CA?
- San Mateo County, CA has a Gera County Health Risk Index (GCHRI) of 21.2/100, ranking 459 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 San Mateo County?
- The adult obesity prevalence in San Mateo County, CA is 22.3% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 22.3%.
- What is the diabetes rate in San Mateo County?
- The diagnosed diabetes prevalence among adults in San Mateo County, CA is 10.6% (CDC PLACES, June 2026, crude prevalence).
- What is the coronary heart disease rate in San Mateo County?
- The coronary heart disease prevalence among adults in San Mateo County, CA is 5.2% (CDC PLACES, June 2026, crude prevalence).
- What is the smoking rate in San Mateo County?
- The current cigarette smoking prevalence among adults in San Mateo County, CA is 8.0% (CDC PLACES, June 2026, crude prevalence).
Concerned about health risks in San Mateo 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.
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.