Lead (2008) Nonattainment Area Summary

Data is current as of June 20, 2017

---

Number of Areas	Number of Counties	2010 Population
20	22	9,665,808

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