FRED offers plenty of U.S. county-level data, including per capita personal income. One can look closely at individual counties in FRED and create regional maps in GeoFRED. This map focuses on New York City and the surrounding counties. One peculiarity worth noting is that each city borough is also its own state county: New York (Manhattan borough), Bronx, Kings (Brooklyn borough), Queens, and Richmond (Staten Island borough). There are stark contrasts in income across all these counties, with Manhattan clearly on top. The surrounding counties, however, have incomes higher than any borough other than Manhattan. Thus, even the Big Apple obeys the rule that incomes are generally higher for suburban residents.
How this graph was created: The original post referenced an interactive map from our now discontinued GeoFRED site. The revised post provides a replacement map from FRED’s new mapping tool. To create FRED maps, go to the data series page in question and look for the green “VIEW MAP” button at the top right of the graph. See this post for instructions to edit a FRED map. Only series with a green map button can be mapped.
Suggested by Christian Zimmermann