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Updated: May 20, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

NCHS urban-rural classification scheme for counties.

Deborah D Ingram¹, Sheila J Franco

¹U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics, Office of Analysis and Epidemiology, Hyattsville, Maryland 20782, USA.

Vital and Health Statistics. Series 2, Data Evaluation and Methods Research

|July 13, 2012

Summary

The 2006 National Center for Health Statistics (NCHS) Urban-Rural Classification Scheme for Counties identifies health disparities. This scheme effectively assesses health differences across various urbanization levels, aiding public health monitoring.

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Last Updated: May 20, 2026

Watershed Planning within a Quantitative Scenario Analysis Framework

Watershed Planning within a Quantitative Scenario Analysis Framework

Published on: July 24, 2016

Area of Science:

Public Health
Biostatistics
Geographic Health Studies

Background:

Urbanization significantly impacts health outcomes.
Accurate classification of counties by urbanization is crucial for health research.
Previous classification schemes may not fully capture the nuances of urban-rural health disparities.

Purpose of the Study:

To introduce the 2006 National Center for Health Statistics (NCHS) Urban-Rural Classification Scheme for Counties.
To demonstrate the utility of the scheme in identifying health differences based on urbanization.
To provide a framework for assessing and monitoring health disparities across the urban-rural continuum.

Main Methods:

Developed a six-level classification scheme for U.S. counties based on the Office of Management and Budget's delineations.
Utilized U.S. Department of Agriculture Rural-Urban Continuum Codes to subdivide metropolitan counties by population.
Applied the scheme to data from the National Vital Statistics System (NVSS) and National Health Interview Survey (NHIS).

Main Results:

The 2006 NCHS scheme categorizes counties into metropolitan (four levels) and nonmetropolitan (two levels).
Application to NVSS and NHIS data revealed significant health disparities linked to urbanization.
The scheme effectively highlighted differences between inner-city and suburban communities.

Conclusions:

The 2006 NCHS Urban-Rural Classification Scheme for Counties is a valuable tool for public health research.
The scheme successfully identifies and quantifies health disparities across diverse community types.
It is well-suited for ongoing assessment and monitoring of health differences along the urbanization spectrum.