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St. Louis County, Missouri

High risk

Gera County Health Risk Index: 55.9/100 · National rank 89 of 480 · Population: 281,754 · CDC PLACES June 2026

What is the chronic-disease health risk in St. Louis County, Missouri?

As of June 2026, St. Louis County, Missouri has a Gera County Health Risk Index of 55.9/100 (national rank 89/480; high risk). Adult chronic-disease prevalence: obesity 37.0%, diabetes 13.3%, coronary heart disease 6.1%, smoking 16.5%. 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 Index55.9 / 100Rank 89 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 — St. Louis County (CDC PLACES June 2026)

St. Louis County, Missouri — CDC PLACES June 2026 crude prevalence (adults)
MeasurePrevalenceWeight in GCHRI
Obesity37.0%25%
Diagnosed diabetes13.3%25%
Coronary heart disease6.1%30%
Current cigarette smoking16.5%20%
GCHRI composite score55.9 / 100—

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

St. Louis County, Missouri

Population: 281,754 · National rank: 89 / 480 (by chronic-disease risk)

High risk

Gera County Health Risk Index

55.9 / 100

Obesity

37.0%

adults

Diabetes

13.3%

adults

Heart Disease

6.1%

adults

Smoking

16.5%

adults

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

Other counties in Missouri

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Frequently asked questions

What is the Gera County Health Risk Index for St. Louis County, MO?
St. Louis County, MO has a Gera County Health Risk Index (GCHRI) of 55.9/100, ranking 89 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 St. Louis County?
The adult obesity prevalence in St. Louis County, MO is 37.0% (CDC PLACES, June 2026, crude prevalence). The national mean across the 480 included counties is 37.0%.
What is the diabetes rate in St. Louis County?
The diagnosed diabetes prevalence among adults in St. Louis County, MO is 13.3% (CDC PLACES, June 2026, crude prevalence).
What is the coronary heart disease rate in St. Louis County?
The coronary heart disease prevalence among adults in St. Louis County, MO is 6.1% (CDC PLACES, June 2026, crude prevalence).
What is the smoking rate in St. Louis County?
The current cigarette smoking prevalence among adults in St. Louis County, MO is 16.5% (CDC PLACES, June 2026, crude prevalence).

Concerned about health risks in St. Louis 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.