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/IN/OLDEST

ZIP Codes With the Oldest Population in Indiana

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 46624 South Bend St. Joseph 82.8
2 47123 Grantsburg Crawford 77.3
3 47225 Clarksburg Decatur 70.4
4 47035 New Trenton Franklin 70.3
5 46290 Indianapolis Hamilton 70.2
6 46377 Shelby Lake 69.6
7 47435 Helmsburg Brown 68.8
8 46345 Kingsbury LaPorte 68.0
9 46301 Beverly Shores Porter 66.7
10 46302 Boone Grove Porter 66.1
11 46379 Sumava Resorts Newton 63.3
12 47455 Patricksburg Owen 63.3
13 46127 Falmouth Rush 62.6
14 47366 New Lisbon Henry 62.6
15 47857 Knightsville Clay 62.3
16 47116 Eckerty Crawford 62.1
17 47344 Greensboro Henry 61.3
18 47578 Sandborn Knox 61.0
19 47580 Schnellville Dubois 60.9
20 47386 Springport Henry 60.5
21 47596 Westphalia Knox 60.5
22 47950 Idaville White 60.5
23 46186 Wilkinson Hancock 60.0
24 47449 Newberry Greene 59.9
25 46968 Ora Pulaski 59.7
26 47524 Decker Knox 59.0
27 46980 Servia Wabash 58.6
28 47537 Gentryville Spencer 58.4
29 47640 Hazleton Gibson 58.4
30 47367 Oakville Delaware 58.3
31 47016 Cedar Grove Franklin 58.2
32 46117 Charlottesville Hancock 58.1
33 47468 Unionville Monroe 57.3
34 47038 Patriot Switzerland 57.1
35 47387 Straughn Henry 56.7
36 47925 Buffalo White 56.7
37 47162 New Washington Clark 56.2
38 47924 Buck Creek Tippecanoe 56.0
39 46796 Wolflake Noble 55.6
40 47370 Pershing Wayne 55.5
41 47270 Paris Crossing Jennings 55.3
42 46156 Milroy Rush 55.2
43 47017 Cross Plains Ripley 55.2
44 47235 Freetown Jackson 54.8
45 47227 Commiskey Jennings 54.3
46 46794 Wawaka Noble 54.1
47 47551 Leopold Perry 53.9
48 46182 Waldron Shelby 53.4
49 47649 Francisco Gibson 53.4
50 47335 Dublin Wayne 53.3

Showing the top 50 of 774 ZIP codes in Indiana that have this figure . 46624 ranks 1st at 82.8, against 53.3 in 50th place.

Other rankings for Indiana

Cite this page

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

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