PM-10 (1987) Nonattainment Area Summary

Data is current as of December 31, 2021

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Classification	Number of Areas	Number of Counties	2010 Population
Serious	5	5	4,527,094
Moderate	19	17	2,674,512
Nonattainment	0	0	0
SUBTOTAL	24	22	7,201,606
GRAND TOTAL	24	22	7,201,606

County subtotals and grand totals may not equal sum of parts. Part counties are only counted one time across groupings. Multi-state nonattainment areas are not considered maintenance areas until all states in the area have been redesignated