![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Classified Carbon Monoxide Nonattainment Areas
As of November 13, 2009
| Areas Listed Alphabetically | Classification | No. Counties NAA |
Population | EPA Region |
State |
|---|---|---|---|---|---|
| Las Vegas, NV | Serious | 1 | 478,766 | 9 | NV |
| 1 Total Areas | 1 | 478,766 | |||
No. of Counties NAA reflects the number of counties in the NAA, while the total count accounts for more than one area being in a county.