| Rank | County | Population | Median household income |
| 1 | Loudoun County, Va. | 277,433 | $110,643 |
| 2 | Fairfax County, Va. | 1,005,980 | $106,785 |
| 3 | Howard County, Md. | 272,412 | $101,710 |
| 4 | Hunterdon County, N.J. | 129,000 | $100,947 |
| 5 | Somerset County, N.J. | 321,589 | $100,207 |
| 6 | Fairfax City, Va. | 23,281 | $98,133 |
| 7 | Morris County, N.J. | 486,459 | $97,565 |
| 8 | Douglas County, Colo. | 270,286 | $97,480 |
| 9 | Arlington County, Va. | 204,889 | $96,390 |
| 10 | Montgomery County, Md. | 942,747 | $93,999 |
| 11 | Nassau County, N.Y. | 1,352,817 | $93,579 |
| 12 | Stafford County, Va. | 120,219 | $89,536 |
| 13 | Calvert County, Md. | 88,126 | $89,049 |
| 14 | Prince William County | 358,719 | $88,675 |
| 15 | Putnam County, N.Y. | 99,195 | $88,580 |
| 16 | Goochland County, Va. | 20,494 | $88,552 |
| 17 | Williamson County, Tenn. | 165,336 | $88,316 |
| 18 | Marin County, Calif. | 246,985 | $88,101 |
| 19 | Santa Clara County, Calif. | 1,734,756 | $87,287 |
| 20 | Forsyth County, Ga. | 158,009 | $86,938 |
| 21 | Charles County, Md. | 140,032 | $86,586 |
| 22 | Summit County, Utah | 35,448 | $85,258 |
| 23 | Alexandria City, Va. | 140,657 | $85,135 |
| 24 | Chester County, Pa. | 485,083 | $84,844 |
| 25 | Suffolk County, N.Y. | 1,510,716 | $84,767 |
Where did THAT name come from? I would hate to have to tell someone I lived there. Unless my name was Gooch.
Northern VA does pretty well throughout this survey. Shoosh, who knew lawyering was such a dynamo for economic growth?
My family has lived in four of the top ten, but we were definitely dragging the median down in each case.