According to GlaxoSmithKline, 20% of the U.S. suffers from chronic nighttime nasal congestion. The makers of Breathe Right Nasal Strips partnered with Sperling’s BestPlaces to identify the 20 Most Congested Cities in the United States. The top 20 metropolitan areas where residents are most challenged by congestion are:
| 1. Oklahoma City, OK | 11. St. Louis, MO |
| 2. Birmingham, AL | 12. Indianapolis, IN |
| 3. New Orleans, LA | 13. Richmond, VA |
| 4. Louisville, KY | 14. Austin, TX |
| 5. Memphis, TN | 15. Pittsburgh, PA |
| 6. San Antonio, TX | 16. Detroit, MI |
| 7. Dallas, TX | 17. Columbia, SC |
| 8. Charlotte, NC | 18. Nashville, TN |
| 9. Houston, TX | 19. Tampa, FL |
| 10. Philadelphia, PA | 20. Cincinnati, OH |
