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/OLDEST

ZIP Codes With the Oldest Population in Wisconsin

What this measures. Median age of residents, ACS 5-year estimate. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Median age
1 54946 King Waupaca 80.1
2 54517 Clam Lake Ashland 73.1
3 53099 Woodland Dodge 70.1
4 54175 Townsend Oconto 67.4
5 54625 Dodge Trempealeau 66.8
6 54120 Fence Florence 66.7
7 54557 Presque Isle Vilas 66.0
8 54104 Athelstane Marinette 65.5
9 54210 Ellison Bay Door 64.9
10 53167 Rochester Racine 64.8
11 54246 Washington Island Door 64.7
12 54125 Goodman Marinette 64.4
13 54102 Amberg Marinette 64.3
14 54830 Danbury Burnett 63.9
15 54212 Fish Creek Door 63.3
16 54465 Pickerel Forest 63.2
17 54547 Mercer Iron 63.2
18 54850 La Pointe Ashland 62.9
19 54545 Manitowish Waters Vilas 62.7
20 54827 Cornucopia Bayfield 62.6
21 54214 Francis Creek Manitowoc 62.5
22 53069 Okauchee Waukesha 62.1
23 54463 Pelican Lake Oneida 62.0
24 54769 Stockholm Pepin 61.9
25 54844 Herbster Bayfield 61.9
26 54211 Ephraim Door 61.8
27 54430 Elton Langlade 61.8
28 54149 Mountain Oconto 61.7
29 54540 Land O Lakes Vilas 61.5
30 53176 Springfield Walworth 61.3
31 53962 Union Center Juneau 61.1
32 54821 Cable Bayfield 60.6
33 54896 Winter Sawyer 60.5
34 54234 Sister Bay Door 60.3
35 54428 Elcho Langlade 60.3
36 54628 Ferryville Crawford 60.3
37 54512 Boulder Junction Vilas 60.2
38 54562 Three Lakes Oneida 60.2
39 54209 Egg Harbor Door 59.8
40 54531 Hazelhurst Oneida 59.7
41 54554 Phelps Vilas 59.6
42 54838 Gordon Douglas 59.4
43 53003 Ashippun Dodge 59.3
44 54828 Couderay Sawyer 59.3
45 54485 Summit Lake Langlade 58.9
46 54565 Upson Iron 58.9
47 54561 Star Lake Vilas 58.8
48 54745 Holcombe Chippewa 58.8
49 54888 Trego Washburn 58.8
50 54865 Port Wing Bayfield 58.6

Showing the top 50 of 775 ZIP codes in Wisconsin that have this figure . 54946 ranks 1st at 80.1, against 58.6 in 50th place.

Other rankings for Wisconsin

Cite this page

zipcodes.pro. “ZIP Codes With the Oldest Population in Wisconsin.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/wi/oldest

Underlying data is public domain or openly licensed — sources, vintages and licences.