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/KS/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Kansas

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 67218 Wichita Sedgwick 4,694
2 66506 Manhattan Riley 4,456
3 66212 Overland Park Johnson 4,331
4 67203 Wichita Sedgwick 4,288
5 66223 Overland Park Johnson 3,963
6 66213 Overland Park Johnson 3,907
7 66101 Kansas City Wyandotte 3,880
8 67208 Wichita Sedgwick 3,805
9 67211 Wichita Sedgwick 3,769
10 66205 Mission Johnson 3,759
11 66204 Overland Park Johnson 3,624
12 66207 Overland Park Johnson 3,443
13 67212 Wichita Sedgwick 3,426
14 66604 Topeka Shawnee 3,404
15 66210 Overland Park Johnson 3,362
16 66208 Prairie Village Johnson 3,319
17 66202 Mission Johnson 3,308
18 66214 Overland Park Johnson 3,205
19 66215 Lenexa Johnson 3,194
20 66209 Leawood Johnson 3,167
21 66216 Shawnee Johnson 3,152
22 66203 Shawnee Johnson 3,104
23 66206 Leawood Johnson 3,011
24 67213 Wichita Sedgwick 2,999
25 66611 Topeka Shawnee 2,973
26 67214 Wichita Sedgwick 2,851
27 66103 Kansas City Wyandotte 2,728
28 67207 Wichita Sedgwick 2,633
29 67260 Wichita Sedgwick 2,626
30 66102 Kansas City Wyandotte 2,564
31 66112 Kansas City Wyandotte 2,342
32 67220 Wichita Sedgwick 2,263
33 67217 Wichita Sedgwick 2,260
34 66621 Topeka Shawnee 2,188
35 67202 Wichita Sedgwick 2,118
36 66221 Overland Park Johnson 2,106
37 66605 Topeka Shawnee 2,089
38 67041 Elbing Butler 2,085
39 66603 Topeka Shawnee 2,047
40 66224 Overland Park Johnson 1,902
41 67216 Wichita Sedgwick 1,899
42 66062 Olathe Johnson 1,874
43 66045 Lawrence Douglas 1,728
44 66606 Topeka Shawnee 1,708
45 66104 Kansas City Wyandotte 1,673
46 67206 Wichita Sedgwick 1,655
47 66612 Topeka Shawnee 1,647
48 66219 Lenexa Johnson 1,633
49 67117 North Newton Harvey 1,606
50 67053 Goessel Marion 1,583

Showing the top 50 of 704 ZIP codes in Kansas that have this figure . 67218 ranks 1st at 4,694, against 1,583 in 50th place.

Other rankings for Kansas

Cite this page

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

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