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/AZ/YOUNGEST

ZIP Codes With the Youngest Population in Arizona

What this measures. Median age of residents, lowest first. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Median age
1 85371 Poston La Paz 15.3
2 86021 Colorado City Mohave 18.5
3 86011 Flagstaff Coconino 19.1
4 85309 Luke Air Force Base Maricopa 21.2
5 85707 Tucson Pima 22.3
6 85930 Mcnary Apache 22.4
7 85613 Fort Huachuca Cochise 22.8
8 85719 Tucson Pima 23.0
9 85708 Tucson Pima 23.3
10 86032 Joseph City Navajo 23.3
11 86556 Tsaile Apache 23.5
12 86001 Flagstaff Coconino 23.8
13 85017 Phoenix Maricopa 24.3
14 86434 Peach Springs Mohave 25.0
15 85352 Tacna Yuma 25.2
16 85281 Tempe Maricopa 25.4
17 86321 Bagdad Yavapai 26.1
18 85531 Central Graham 26.8
19 85926 Fort Apache Navajo 27.0
20 86540 Nazlini Apache 27.2
21 85035 Phoenix Maricopa 27.4
22 85911 Cibecue Navajo 27.5
23 86329 Humboldt Yavapai 27.8
24 85004 Phoenix Maricopa 27.9
25 85334 Ehrenberg La Paz 28.2
26 85307 Glendale Maricopa 28.7
27 85033 Phoenix Maricopa 29.0
28 85353 Tolleson Maricopa 29.0
29 85121 Bapchule Pinal 29.2
30 85620 Naco Cochise 29.2
31 86043 Second Mesa Navajo 29.2
32 85936 Saint Johns Apache 29.3
33 85031 Phoenix Maricopa 29.6
34 85301 Glendale Maricopa 29.7
35 85723 Tucson Pima 29.7
36 86015 Bellemont Coconino 29.7
37 85550 San Carlos Gila 29.8
38 85019 Phoenix Maricopa 29.9
39 85542 Peridot Graham 30.0
40 85706 Tucson Pima 30.0
41 85037 Phoenix Maricopa 30.1
42 85626 Pirtleville Cochise 30.1
43 85634 Sells Pima 30.2
44 86052 North Rim Coconino 30.3
45 85256 Scottsdale Maricopa 30.5
46 85043 Phoenix Maricopa 30.6
47 85347 Roll Yuma 30.6
48 85540 Morenci Greenlee 30.6
49 86547 Round Rock Apache 30.6
50 85008 Phoenix Maricopa 30.7

Showing the top 50 of 401 ZIP codes in Arizona that have this figure . 85371 ranks 1st at 15.3, against 30.7 in 50th place.

Other rankings for Arizona

Cite this page

zipcodes.pro. “ZIP Codes With the Youngest Population in Arizona.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/az/youngest

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