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/LARGEST-POPULATION

ZIP Codes With the Largest Population in Indiana

What this measures. Population of the Census tabulation area, ACS 5-year estimate. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Population
1 47906 West Lafayette Tippecanoe 75,198
2 46307 Crown Point Lake 71,673
3 46143 Greenwood Johnson 61,803
4 46227 Indianapolis Marion 57,587
5 46032 Carmel Hamilton 51,515
6 47130 Jeffersonville Clark 50,514
7 47150 New Albany Floyd 49,144
8 46074 Westfield Hamilton 48,901
9 46037 Fishers Hamilton 48,713
10 47201 Columbus Bartholomew 47,900
11 46060 Noblesville Hamilton 47,610
12 46226 Indianapolis Marion 47,099
13 46350 La Porte LaPorte 44,763
14 47374 Richmond Wayne 44,615
15 46112 Brownsburg Hendricks 44,220
16 46360 Michigan City LaPorte 43,817
17 46038 Fishers Hamilton 43,754
18 47909 Lafayette Tippecanoe 43,561
19 46140 Greenfield Hancock 43,511
20 46237 Indianapolis Marion 43,473
21 46123 Avon Hendricks 43,353
22 46514 Elkhart Elkhart 42,389
23 47905 Lafayette Tippecanoe 42,219
24 46383 Valparaiso Porter 42,183
25 46062 Noblesville Hamilton 41,060
26 46033 Carmel Hamilton 40,881
27 46385 Valparaiso Porter 40,856
28 46254 Indianapolis Marion 40,674
29 47401 Bloomington Monroe 40,607
30 46368 Portage Porter 40,301
31 46224 Indianapolis Marion 40,228
32 47630 Newburgh Warrick 39,818
33 46410 Merrillville Lake 39,243
34 46222 Indianapolis Marion 38,887
35 46219 Indianapolis Marion 38,855
36 46168 Plainfield Hendricks 38,826
37 46835 Fort Wayne Allen 38,166
38 46901 Kokomo Howard 38,082
39 46203 Indianapolis Marion 37,758
40 46902 Kokomo Howard 37,017
41 46220 Indianapolis Marion 36,952
42 46217 Indianapolis Marion 36,917
43 46077 Zionsville Boone 36,760
44 46235 Indianapolis Marion 36,317
45 46260 Indianapolis Marion 35,707
46 46131 Franklin Johnson 34,647
47 47403 Bloomington Monroe 34,396
48 46142 Greenwood Johnson 34,348
49 46239 Indianapolis Marion 33,931
50 46526 Goshen Elkhart 33,668

Showing the top 50 of 807 ZIP codes in Indiana that have this figure . 47906 ranks 1st at 75,198, against 33,668 in 50th place.

Other rankings for Indiana

Cite this page

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

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