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Sulfur Dioxide (1971) Nonattainment Area Summary

As of September 22, 2016
Designation Number of Areas Number of Counties 2010 Population
Primary 5 5 17,885
Primary, Secondary 4 4 1,199,238
SUBTOTAL 9 9 1,217,123
GRAND TOTAL 9 9 1,217,123

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

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