PM-10 (1987) Nonattainment Area Summary

Data is current as of September 30, 2017

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Classification	Number of Areas	Number of Counties	2010 Population
Serious	5	6	4,390,967
Moderate	32	26	4,744,324
SUBTOTAL	37	31	9,135,291
GRAND TOTAL	37	31	9,135,291

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