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8-Hour Ozone (2015) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of September 30, 2020


Classification Number of Areas Number of Counties 2010 Population
Marginal 1 4 1,650,276
Marginal (Rural Transport) 1 1 31
SUBTOTAL 2 5 1,650,307
 
GRAND TOTAL 2 5 1,650,307

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.