Green Book

You are here: EPA Home > Green Book > PM-2.5 (2006) Nonattainment Area Summary

PM-2.5 (2006) Nonattainment Area Summary

Data is current as of September 30, 2022


Classification Number of Areas Number of Counties 2010 Population
Serious 5 19 21,828,537
Moderate 6 17 9,451,260
SUBTOTAL 11 36 31,279,797
 
Former Subpart 1 0 0 0
SUBTOTAL 0 0 0
 
GRAND TOTAL 11 36 31,279,797

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