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/MI/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Michigan

What this measures. People per square mile of land area. Source: Census American Community Survey and Gazetteer, data release 2026-10-12.

# ZIP City County People per sq mi
1 48825 East Lansing Ingham 16,441
2 49784 Kincheloe Chippewa 13,437
3 48859 Mount Pleasant Isabella 10,922
4 48212 Hamtramck Wayne 8,201
5 48221 Detroit Wayne 7,968
6 48201 Detroit Wayne 7,964
7 48235 Detroit Wayne 7,302
8 49507 Grand Rapids Kent 6,947
9 48224 Detroit Wayne 6,876
10 48146 Lincoln Park Wayne 6,727
11 48021 Eastpointe Macomb 6,600
12 48072 Berkley Oakland 6,320
13 48126 Dearborn Wayne 6,210
14 48225 Harper Woods Wayne 6,020
15 48237 Oak Park Oakland 5,696
16 48104 Ann Arbor Washtenaw 5,642
17 48228 Detroit Wayne 5,627
18 48226 Detroit Wayne 5,618
19 48219 Detroit Wayne 5,599
20 48128 Dearborn Wayne 5,465
21 48125 Dearborn Heights Wayne 5,463
22 48067 Royal Oak Oakland 5,456
23 49503 Grand Rapids Kent 5,440
24 48210 Detroit Wayne 5,407
25 48205 Detroit Wayne 5,382
26 48227 Detroit Wayne 5,372
27 48030 Hazel Park Oakland 5,310
28 48230 Grosse Pointe Wayne 5,276
29 48081 Saint Clair Shores Macomb 5,251
30 48915 Lansing Ingham 5,229
31 48088 Warren Macomb 5,200
32 48017 Clawson Oakland 5,169
33 48127 Dearborn Heights Wayne 5,158
34 48206 Detroit Wayne 4,922
35 48310 Sterling Heights Macomb 4,904
36 48080 Saint Clair Shores Macomb 4,903
37 48220 Ferndale Oakland 4,867
38 48082 Saint Clair Shores Macomb 4,845
39 48015 Center Line Macomb 4,831
40 48066 Roseville Macomb 4,779
41 49506 Grand Rapids Kent 4,763
42 48202 Detroit Wayne 4,708
43 48192 Wyandotte Wayne 4,628
44 48122 Melvindale Wayne 4,615
45 48238 Detroit Wayne 4,580
46 48135 Garden City Wayne 4,561
47 48069 Pleasant Ridge Oakland 4,557
48 48240 Redford Wayne 4,537
49 48073 Royal Oak Oakland 4,477
50 49006 Kalamazoo Kalamazoo 4,434

Showing the top 50 of 992 ZIP codes in Michigan that have this figure . 48825 ranks 1st at 16,441, against 4,434 in 50th place.

Other rankings for Michigan

Cite this page

zipcodes.pro. “Most Densely Populated ZIP Codes in Michigan.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/mi/highest-density

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