Actually, these are the richest zip codes per the IRS by average gross income:
New York, NY 10153: $10,284,676
New York, NY 10274: $5,035,236
New York, NY 10106: $5,001,180
New York, NY 10152: $4,303,444
New York, NY 10179: $4,172,937
New York, NY 10171: $2,864,801
New York, NY 10104: $1,506,169
New York, NY 10103: $1,258,599
New York, NY 10112: $1,079,216
New York, NY 10154: $1,010,233
New York, NY 10020: $1,070,336
New York, NY 10167: $983,031
Atherton, CA 94027 $978,943
Purchase, NY 10577: $913,631
New York, NY 10110 $911,345
Palo Alto, CA 94304 $829,940
New York, NY 10111: $787,136
Miami Beach, FL 33109 $756,182
Seattle, WA 98154: $636,327
Alpine, NJ 07620: $628,913
New York, NY 10005 $615,272
Mount Vernon, NJ 07976 $603,548
Mill Neck, NY 11765 $603,411
Weston, MA 02494: $563,612
San Francisco, CA 94119 $553,573
Far Hills, NJ 07931 $550,636
Gladwayne, PA 19035: $536,467
Short Hills, NJ 07078: $534,712
San Francisco, CA 94111 $528,778
Chicago, IL 60604: $526,229
Kenilworth, IL 60042: $514,220
Portola Valley, CA 94028 $504,384
New Canaan, CT 06883: $496,711
Greenwich, CT 06831 $467,709
Greenwich, CT 06830 $465,753
Los Angeles, CA 90067: $447,962
New York, NY 10580 $441,584
Rye, NY 10580: $441,484
Riverside, CT 06878 $434,402
Darien, CT 06820 $417,666
New York, NY 10119 $415,593
Houston, TX 77010: $415,147
Green Farms, CT 06436 $410,950
Ross, CA 94957 $408,410
Sapaponack, NY 11962 $407,875
Boston, MA 02205 $403,503
New York, NY 10155: $403,473
New York, NY 10007: $391,809
Glencoe, IL 60022: $391,092
Palm Beach, FL 33480: $390,065
Dover, MA 02030: $389,438
Palo Alto, CA 94301 $389,094
New York, NY 10128: $391,168
Newport Beach, CA 92658 $384,947
Prides Crossing, MA 01965 $384,362
Boca Grande, FL 33921: $383,302
New York, NY 10021: $381,895
Weston, CT 06883 $375,375
Los Altos, CA 94022 $374,550
Newport Coast, CA 92657: $370,846
Chappaqua, NY 10514 $359,765
Rockland, DE 19732 $358,314
Old Westbury, NY 11568 $357,947
Armonk, NY 10504 $357,178
Old Greenwich, CT 06870 $355,983
New York, NY 10282: $351,913
Westport, CT 06880 $351,055
Gibson Island, MD 21056: $350,787
New York, NY 10028: $349,803
New York, NY 10168: $348,100
Beverly Hills, CA 90210 $346,351
Boston, MA 02108 $344,943
New York, NY 10022: $342,667
New York, NY 10013 $340,995
New York, NY 10169 $336,831
Pound Ridge, NY 10576 $335,819
San Francisco, CA 94104: $335,714
Manhasset, NY 11030 $334,012
Longboat Key, FL 34228: $330,402
New York, NY 10018 $327,963
Akron, OH 44316 $327,013
Saint Louis, MO 63124$326,493
New York, NY 10158 $326,151
Medina, WA 98039: $325,891
Houston, TX 77002: $325,653
Scarsdale, NY 10583: $325,439
Ranco Santa Fe, CA 92067 $323,369
Lake Forest, IL 60045 $316,923
Washington, DC 20004 $316,391
Pacific Palisades, CA $314,889
Bedford, NY 10506 $312,970
Naples, FL 34102 $312,954
Villanova, PA 19085 $311,937
Santa Monica, CA 90402 $304,261
Vero Beach, FL 32963: $301,270
http://www.irs.gov/uac/SOI-Tax-Stats...Code-Data-(SOI)