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Green Book Nonattainment Areas

8-Hour Ozone (2008) Nonattainment Area Summary

As of June 17, 2016
Classification Number of Areas Number of Counties 2010 Population
Extreme 2 12 19,561,850
Severe 15 3 9 3,535,243
Serious 2 2 824,175
Moderate 14 88 55,369,982
Marginal 23 110 41,237,669
 
SUBTOTAL 44 216 120,528,919
 
GRAND TOTAL 44 216 120,528,919

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated


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