Sulfur Dioxide (2010) Maintenance Area (Redesignated from Nonattainment) Summary

Data is current as of May 31, 2019

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Number of Areas	Number of Counties	2010 Population
4	5	270,799

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