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Jefferson County, Colorado

Low risk

Gera County Health Risk Index: 19.5/100 · National rank 464 of 480 · Population: 576,366 · CDC PLACES June 2026

What is the chronic-disease health risk in Jefferson County, Colorado?

As of June 2026, Jefferson County, Colorado has a Gera County Health Risk Index of 19.5/100 (national rank 464/480; low risk). Adult chronic-disease prevalence: obesity 23.1%, diabetes 8.3%, coronary heart disease 5.1%, smoking 9.9%. 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 Index19.5 / 100Rank 464 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 — Jefferson County (CDC PLACES June 2026)

Jefferson County, Colorado — CDC PLACES June 2026 crude prevalence (adults)
MeasurePrevalenceWeight in GCHRI
Obesity23.1%25%
Diagnosed diabetes8.3%25%
Coronary heart disease5.1%30%
Current cigarette smoking9.9%20%
GCHRI composite score19.5 / 100—

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

Jefferson County, Colorado

Population: 576,366 · National rank: 464 / 480 (by chronic-disease risk)

Low risk

Gera County Health Risk Index

19.5 / 100

Obesity

23.1%

adults

Diabetes

8.3%

adults

Heart Disease

5.1%

adults

Smoking

9.9%

adults

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

Other counties in Colorado

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Frequently asked questions

What is the Gera County Health Risk Index for Jefferson County, CO?
Jefferson County, CO has a Gera County Health Risk Index (GCHRI) of 19.5/100, ranking 464 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 Jefferson County?
The adult obesity prevalence in Jefferson County, CO is 23.1% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 23.1%.
What is the diabetes rate in Jefferson County?
The diagnosed diabetes prevalence among adults in Jefferson County, CO is 8.3% (CDC PLACES, June 2026, crude prevalence).
What is the coronary heart disease rate in Jefferson County?
The coronary heart disease prevalence among adults in Jefferson County, CO is 5.1% (CDC PLACES, June 2026, crude prevalence).
What is the smoking rate in Jefferson County?
The current cigarette smoking prevalence among adults in Jefferson County, CO is 9.9% (CDC PLACES, June 2026, crude prevalence).

Concerned about health risks in Jefferson 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.