PM-10 (1987) Nonattainment Area Summary

Data is current as of August 31, 2020

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Classification	Number of Areas	Number of Counties	2010 Population
Serious	6	6	4,673,999
Moderate	21	19	2,717,536
SUBTOTAL	27	24	7,391,535
GRAND TOTAL	27	24	7,391,535

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