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/IA/LOWEST-AVERAGE-INCOME

ZIP Codes With the Lowest Average Income in Iowa

What this measures. Total adjusted gross income divided by tax returns filed, lowest first. ZIP codes with fewer than 200 returns are excluded: the IRS suppresses small cells and the remainder swing too wildly to rank. Source: IRS Statistics of Income, ZIP code data, data release 2026-10-12.

# ZIP City County Average AGI per return
1 50314 Des Moines Polk $39,838
2 51105 Sioux City Woodbury $41,686
3 52802 Davenport Scott $42,511
4 50316 Des Moines Polk $44,421
5 52801 Davenport Scott $46,251
6 50703 Waterloo Black Hawk $46,305
7 52739 Conesville Louisa $47,857
8 50008 Allerton Wayne $48,189
9 51103 Sioux City Woodbury $49,380
10 50133 Kellerton Ringgold $49,850
11 51101 Sioux City Woodbury $50,343
12 50702 Waterloo Black Hawk $51,705
13 52550 Delta Keokuk $52,232
14 51501 Council Bluffs Pottawattamie $52,484
15 52572 Moulton Appanoose $52,514
16 50140 Lamoni Decatur $52,772
17 50315 Des Moines Polk $53,237
18 52620 Bonaparte Van Buren $53,524
19 50840 Clearfield Taylor $53,805
20 52323 Oxford Junction Jones $53,897
21 50317 Des Moines Polk $53,977
22 52570 Milton Van Buren $54,409
23 52626 Farmington Lee $54,590
24 52339 Tama Tama $55,101
25 50707 Evansdale Black Hawk $55,188
26 50268 What Cheer Keokuk $55,408
27 51109 Sioux City Plymouth $55,690
28 52590 Seymour Wayne $55,876
29 50275 Woodburn Clarke $55,927
30 50150 Lovilia Monroe $56,597
31 52162 Postville Allamakee $56,744
32 52632 Keokuk Lee $56,755
33 52254 Lost Nation Clinton $56,765
34 52651 Stockport Van Buren $56,867
35 52335 South English Keokuk $56,985
36 50029 Bayard Guthrie $57,408
37 50119 Harvey Marion $57,550
38 52554 Eldon Wapello $57,558
39 50449 Klemme Hancock $57,559
40 52544 Centerville Appanoose $57,641
41 52337 Stanwood Cedar $57,861
42 50529 Dakota City Humboldt $58,518
43 52574 Mystic Appanoose $58,928
44 52804 Davenport Scott $58,978
45 50144 Leon Decatur $59,027
46 52619 Argyle Lee $59,125
47 50005 Albion Marshall $59,271
48 52549 Cincinnati Appanoose $59,319
49 50859 Prescott Adams $59,357
50 50641 Hazleton Buchanan $59,379

Showing the top 50 of 699 ZIP codes in Iowa that have this figure and meet the threshold above. 50314 ranks 1st at $39,838, against $59,379 in 50th place.

Other rankings for Iowa

Cite this page

zipcodes.pro. “ZIP Codes With the Lowest Average Income in Iowa.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/ia/lowest-average-income

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