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Rock Island County, Illinois

High risk

Gera County Health Risk Index: 58.9/100 · National rank 68 of 480 · Population: 141,236 · CDC PLACES June 2026

What is the chronic-disease health risk in Rock Island County, Illinois?

As of June 2026, Rock Island County, Illinois has a Gera County Health Risk Index of 58.9/100 (national rank 68/480; high risk). Adult chronic-disease prevalence: obesity 39.6%, diabetes 13.1%, coronary heart disease 7.3%, smoking 14.5%. 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 Index58.9 / 100Rank 68 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 — Rock Island County (CDC PLACES June 2026)

Rock Island County, Illinois — CDC PLACES June 2026 crude prevalence (adults)
MeasurePrevalenceWeight in GCHRI
Obesity39.6%25%
Diagnosed diabetes13.1%25%
Coronary heart disease7.3%30%
Current cigarette smoking14.5%20%
GCHRI composite score58.9 / 100—

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

Rock Island County, Illinois

Population: 141,236 · National rank: 68 / 480 (by chronic-disease risk)

High risk

Gera County Health Risk Index

58.9 / 100

Obesity

39.6%

adults

Diabetes

13.1%

adults

Heart Disease

7.3%

adults

Smoking

14.5%

adults

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

Other counties in Illinois

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Frequently asked questions

What is the Gera County Health Risk Index for Rock Island County, IL?
Rock Island County, IL has a Gera County Health Risk Index (GCHRI) of 58.9/100, ranking 68 out of 480 most-populous US counties (rank 1 = highest chronic-disease risk). This places it in the high-risk tier. Source: CDC PLACES (June 2026).
What is the obesity rate in Rock Island County?
The adult obesity prevalence in Rock Island County, IL is 39.6% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 39.6%.
What is the diabetes rate in Rock Island County?
The diagnosed diabetes prevalence among adults in Rock Island County, IL is 13.1% (CDC PLACES, June 2026, crude prevalence).
What is the coronary heart disease rate in Rock Island County?
The coronary heart disease prevalence among adults in Rock Island County, IL is 7.3% (CDC PLACES, June 2026, crude prevalence).
What is the smoking rate in Rock Island County?
The current cigarette smoking prevalence among adults in Rock Island County, IL is 14.5% (CDC PLACES, June 2026, crude prevalence).

Concerned about health risks in Rock Island 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.