The U.S. Census Bureau has mapped the regions with the highest concentration of households in the nation's wealthiest 5 percent, meaning households that make at least $191,000 annually. Here are the top 15 on the list.

1. Bridgeport-Stamford-Norwalk, Conn. (17.9 percent of households among top 5 percent of income-earners)

2. San Jose-Sunnyvale-Santa Clara (15.9)

3. Washington, D.C.-Arlington-Alexandria, Va. (14.1)

4. San Francisco-Oakland-Fremont (13)

5. Trenton-Ewing, N.J. (11.6)

6. New York City-Northern New Jersey-Long Island (10)

7. Oxnard-Thousand Oaks-Ventura (9.7)

8. Boston-Cambridge-Quincy, Mass. (9.7)

9. Boulder, Colo. (9.4)

10. Napa (9.3)

11. Santa Cruz-Watsonville (9)

12. Naples-Marco Island, Fla. (8.8)

13. Baltimore-Towson, Md. (8)

14. Midland, Tex. (7.9)

15. Los Angeles-Long Beach-Santa Ana (7.9)

Note: Census-defined metropolitan areas are named after their biggest cities.

Source: U.S. Census Bureau American Community Survey 2007-2011