The wealthiest cities, towns, counties, states, and ZIP Codes.

Updated: July 1, 2020.

The relative wealth of cities, towns, counties, state and individual ZIP Codes is measured using a Wealth Index . The Wealth Index (WI) is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level. STATES, The five wealthiest:
  1. New Jersey:  147
  2. Maryland: 144
  3. Connecticut: 144
  4. Massachusetts: 137
  5. California: 124
Here is a ranked list by Wealth Index of all 50 states that also including Washington, D.C. in the rankings. COUNTIES, The five wealthiest counties (or county equivalent) are:
  1. Marin County, CA, 251
  2. Falls Church, VA*, 228
  3. Hunterdon County, NJ, 227
  4. Fairfax County, VA, 227
  5. Los Alamos County, NM, 226
Here is a link to a ranked list of the top 200 wealthiest counties in the U.S. *Note that an independent city such as Falls Church, VA is considered a county equivalent for statistical purposes. ZIP CODES, the five wealthiest:
  1. Atherton, CA 94027, 561
  2. Portola Valley, CA 94027, 521
  3. Miami Beach, FL 33109. 510
  4. Short Hills, NJ 07078, 507
  5. Great Falls, VA 22066, 504
Here is a link to the top 200 wealthiest ZIP Codes. WITHIN STATE RANKINGS  There is easy-to-use form built into each state gazetteer that allows you list the wealthiest cities, towns, counties and ZIP Codes within a particular state. It’s located at the bottom of the home page for each state. There is a link to the individual state gazetteers in the navigation bar at the top of this page. As an example, here’s a link to list of the top 20 wealthiest cities and towns in California. This same form allows you to sort by:
  • A Housing Affordability Index
  • A Diversity Index
  • Population
  • Population Density

To learn about the sources of the data that is published in the HomeTownLocator gazetteers, see the References section.