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8-Hour Ozone (2008) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of August 31, 2020


Classification Number of Areas Number of Counties 2010 Population
Moderate 3 16 4,868,524
Marginal 9 65 18,667,921
SUBTOTAL 12 81 23,536,445
 
GRAND TOTAL 12 81 23,536,445

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.