I am surprised that 3 cities from California are in the Top 5. This is an interesting list in this time when economy is rising from the depth of 2008 recession.
| City | Zip Code | Population | Average Household Income. |
| Rancho Santa Fe, California | 92067 | 3,282 | $411,595 |
| Atherton, California | 94027 | 7,582 | $341,129 |
| Auburn University, Alabama | 36849 | 2,291 | $329,387 |
| Short Hills, New Jersey | 7078 | 12,326 | $310,875 |
| Portola Valley, California | 94028 | 6,573 | $303,431 |
| Gladwyne, Pennsylvania | 19035 | 4,101 | $298,025 |
| Chappaqua, New York | 10514 | 12,217 | $297,460 |
| Kenilworth, Illinois | 60043 | 2,560 | $296,947 |
| Pound Ridge, New York | 10576 | 5,289 | $285,811 |
| Goldens Bridge, New York | 10526 | 2,234 | $276,640 |
| Cold Spring Harbor, New York | 11724 | 2,628 | $274,443 |
| New Canaan, Connecticut | 6840 | 19,582 | $273,430 |
| Purchase, New York | 10577 | 3,404 | $265,125 |
| Villanova, Pennsylvania | 19085 | 9,597 | $263,404 |
| Glencoe, Illinois | 60022 | 8,465 | $257,718 |
| Mountain Lakes, New Jersey | 7046 | 4,309 | $254,262 |
| Armonk, New York | 10504 | 7,575 | $253,049 |
| Pacific Palisades, California | 90272 | 25,000 | $252,158 |
| Newport Coast, California | 92657 | 7,512 | $250,118 |
| Waban, Massachusetts | 2468 | 5,380 | $250,044 |
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