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PM-10 (1987) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of August 31, 2020


Classification Number of Areas Number of Counties 2010 Population
Serious 5 15 22,002,469
Moderate 57 60 11,316,941
SUBTOTAL 62 74 33,319,410
 
GRAND TOTAL 62 74 33,319,410

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