Carbon Monoxide Maintenance Area Summary

As of December 14, 2012
Populations are based on the 2010 census

	Number of

Classification	Areas	Counties	Population

Serious	7	16	23,548,401
Moderate > 12.7ppm	4	19	18,345,975
Moderate <= 12.7ppm	32	64	25,770,701

SUBTOTAL:	43	97	67,665,077

Not Classified	34	40	8,145,840

SUBTOTAL:	34	40	8,145,840


GRAND TOTAL:	77	131	75,810,917

County and area subtotals and grand totals may not equal sum of parts. Part counties are only counted one time within groupings. Area totals only include full maintenance areas for a multi-state area.

The Oshkosh Wisconsin area is not included in the totals above. In the August 17, 1994 Federal Register, EPA redesignated Oshkosh from unclassifiable to attainment for carbon monoxide (effective on October 17, 1994: see 59 FR 42168).

Carbon Monoxide Maintenance Area Summary

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