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PM-2.5 (2006) Nonattainment Area Summary

Data is current as of September 30, 2017


Classification Number of Areas Number of Counties 2010 Population
Serious 5 19 21,828,537
Moderate 10 22 9,828,967
SUBTOTAL 15 41 31,657,504
 
GRAND TOTAL 15 41 31,657,504

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