Incomes in the United States have been rising in recent years. The median household income rose to $59,039 last year, up 3.2% from 2015 and one of the highest incomes ever recorded. Poverty levels also declined, yet income inequality did not improve. So while there remain many poor communities, there are also plenty of extremely prosperous ones.

In dozens of U.S. metro areas, a household earning $60,000 annually would fall on the lower end of the income spectrum. These high earning areas tend to share a number of common characteristics. The wealthiest metro areas tend to be expensive, have well-educated populations as well as strong economies — almost without exception. The metro areas on this list are concentrated in the Northeast and Western United States.

21. Hartford-West Hartford-East Hartford, CT
> Median household income: $72,559
> Median home value: $247,400
> Unemployment rate: 4.4%
> Poverty rate: 10.1%

24/7 Wall St. reviewed the median household income in all major U.S. metro areas to identify America’s richest cities. Median incomes in the cities on this list range from about $71,700 to over $110,000 a year.

Click here to see America’s richest cities.
Click here to see our detailed findings and methodology.