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8-Hour Ozone (2008) Nonattainment Area Summary

Data is current as of September 30, 2017


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 15 82 56,624,471
Marginal 16 70 26,744,587
SUBTOTAL 38 168 107,290,326
 
GRAND TOTAL 38 168 107,290,326

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