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/OH/YOUNGEST

ZIP Codes With the Youngest Population in Ohio

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 43027 Homer Licking 11.5
2 43346 Roundhead Hardin 12.4
3 43735 East Fultonham Muskingum 14.4
4 43983 Piedmont Belmont 15.9
5 43325 Iberia Morrow 19.2
6 43210 Columbus Franklin 19.3
7 43403 Bowling Green Wood 19.5
8 44243 Kent Portage 19.5
9 44555 Youngstown Mahoning 19.5
10 44325 Akron Summit 19.7
11 45469 Dayton Montgomery 19.8
12 45630 Friendship Scioto 19.9
13 45384 Wilberforce Greene 20.1
14 45435 Dayton Greene 20.4
15 45409 Dayton Montgomery 21.0
16 43722 Buffalo Guernsey 21.2
17 45674 Rio Grande Gallia 21.2
18 45219 Cincinnati Hamilton 21.3
19 43158 Union Furnace Hocking 21.4
20 45314 Cedarville Greene 21.4
21 45056 Oxford Butler 21.6
22 43022 Gambier Knox 21.9
23 43201 Columbus Franklin 23.2
24 45207 Cincinnati Hamilton 23.4
25 45701 Athens Athens 23.4
26 44304 Akron Summit 23.5
27 45810 Ada Hardin 23.6
28 43077 Unionville Center Union 23.7
29 44661 Nashville Holmes 23.7
30 44624 Dundee Holmes 23.8
31 44311 Akron Summit 24.5
32 44825 Chatfield Crawford 24.9
33 45809 Gomer Allen 24.9
34 45433 Dayton Greene 25.4
35 44652 Middlebranch Stark 25.7
36 44062 Middlefield Geauga 26.2
37 44627 Fredericksburg Holmes 26.2
38 45897 Williamstown Hancock 26.3
39 43217 Columbus Franklin 26.5
40 44308 Akron Summit 26.6
41 45225 Cincinnati Hamilton 26.9
42 44099 Windsor Ashtabula 27.0
43 44115 Cleveland Cuyahoga 27.0
44 44689 Wilmot Holmes 27.0
45 44651 Mechanicstown Carroll 27.4
46 43434 Harbor View Lucas 27.5
47 45115 Decatur Brown 27.5
48 45204 Cincinnati Hamilton 27.6
49 43402 Bowling Green Wood 27.8
50 45361 Potsdam Miami 27.9

Showing the top 50 of 1,195 ZIP codes in Ohio that have this figure . 43027 ranks 1st at 11.5, against 27.9 in 50th place.

Other rankings for Ohio

Cite this page

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

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