Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — RANKINGS/WI/HIGHEST-AVERAGE-INCOME

ZIP Codes With the Highest Average Income in Wisconsin

What this measures. Total adjusted gross income divided by the number of tax returns filed. This is income per RETURN, not per person or per household — a return can be a single filer or a married couple. Source: IRS Statistics of Income, ZIP code data, data release 2026-10-12.

# ZIP City County Average AGI per return
1 53125 Fontana Walworth $259,956
2 53097 Mequon Ozaukee $245,333
3 53122 Elm Grove Waukesha $237,925
4 53217 Milwaukee Milwaukee $215,288
5 53058 Nashotah Waukesha $211,562
6 53092 Mequon Ozaukee $210,799
7 53069 Okauchee Waukesha $209,187
8 53044 Kohler Sheboygan $188,830
9 53029 Hartland Waukesha $182,229
10 53018 Delafield Waukesha $178,230
11 53045 Brookfield Waukesha $167,279
12 53593 Verona Dane $156,010
13 53726 Madison Dane $150,785
14 53597 Waunakee Dane $150,594
15 54209 Egg Harbor Door $148,927
16 53017 Colgate Washington $146,912
17 53072 Pewaukee Waukesha $145,514
18 54173 Suamico Brown $143,194
19 53562 Middleton Dane $142,909
20 54016 Hudson St. Croix $141,967
21 53191 Williams Bay Walworth $141,741
22 53066 Oconomowoc Waukesha $139,816
23 53705 Madison Dane $139,144
24 53012 Cedarburg Ozaukee $138,149
25 53076 Richfield Washington $134,005
26 54082 Houlton St. Croix $133,235
27 53183 Wales Waukesha $132,305
28 54913 Appleton Outagamie $130,972
29 53005 Brookfield Waukesha $130,738
30 53033 Hubertus Washington $127,586
31 53211 Milwaukee Milwaukee $127,419
32 53572 Mount Horeb Dane $123,545
33 53558 Mc Farland Dane $122,442
34 53146 New Berlin Waukesha $121,519
35 54548 Minocqua Oneida $121,280
36 53528 Cross Plains Dane $121,210
37 53147 Lake Geneva Walworth $120,803
38 53711 Madison Dane $120,520
39 53717 Madison Dane $119,543
40 53063 Newton Manitowoc $118,969
41 54545 Manitowish Waters Vilas $117,180
42 53575 Oregon Dane $116,658
43 53202 Milwaukee Milwaukee $115,988
44 54115 De Pere Brown $115,832
45 54212 Fish Creek Door $113,718
46 54738 Eleva Eau Claire $111,493
47 53118 Dousman Waukesha $111,436
48 54942 Greenville Outagamie $111,122
49 53213 Milwaukee Milwaukee $110,497
50 53020 Elkhart Lake Sheboygan $110,067

Showing the top 50 of 697 ZIP codes in Wisconsin that have this figure and meet the threshold above. 53125 ranks 1st at $259,956, against $110,067 in 50th place.

Other rankings for Wisconsin

Cite this page

zipcodes.pro. “ZIP Codes With the Highest Average Income in Wisconsin.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/wi/highest-average-income

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