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Williamson County, Tennessee

Low risk

Gera County Health Risk Index: 29.3/100 · National rank 413 of 480 · Population: 264,460 · CDC PLACES June 2026

What is the chronic-disease health risk in Williamson County, Tennessee?

As of June 2026, Williamson County, Tennessee has a Gera County Health Risk Index of 29.3/100 (national rank 413/480; low risk). Adult chronic-disease prevalence: obesity 29.4%, diabetes 10.0%, coronary heart disease 5.1%, smoking 10.4%. 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 Index29.3 / 100Rank 413 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 — Williamson County (CDC PLACES June 2026)

Williamson County, Tennessee — CDC PLACES June 2026 crude prevalence (adults)
MeasurePrevalenceWeight in GCHRI
Obesity29.4%25%
Diagnosed diabetes10.0%25%
Coronary heart disease5.1%30%
Current cigarette smoking10.4%20%
GCHRI composite score29.3 / 100—

Check another county's health risk

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

Williamson County, Tennessee

Population: 264,460 · National rank: 413 / 480 (by chronic-disease risk)

Low risk

Gera County Health Risk Index

29.3 / 100

Obesity

29.4%

adults

Diabetes

10.0%

adults

Heart Disease

5.1%

adults

Smoking

10.4%

adults

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

Other counties in Tennessee

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Frequently asked questions

What is the Gera County Health Risk Index for Williamson County, TN?
Williamson County, TN has a Gera County Health Risk Index (GCHRI) of 29.3/100, ranking 413 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 Williamson County?
The adult obesity prevalence in Williamson County, TN is 29.4% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 29.4%.
What is the diabetes rate in Williamson County?
The diagnosed diabetes prevalence among adults in Williamson County, TN is 10.0% (CDC PLACES, June 2026, crude prevalence).
What is the coronary heart disease rate in Williamson County?
The coronary heart disease prevalence among adults in Williamson County, TN is 5.1% (CDC PLACES, June 2026, crude prevalence).
What is the smoking rate in Williamson County?
The current cigarette smoking prevalence among adults in Williamson County, TN is 10.4% (CDC PLACES, June 2026, crude prevalence).

Concerned about health risks in Williamson 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.