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/AR/HIGHEST-DENSITY

Most Densely Populated ZIP Codes in Arkansas

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 72035 Conway Faulkner 13,968
2 71998 Arkadelphia Clark 9,041
3 71999 Arkadelphia Clark 6,618
4 72183 Wrightsville Pulaski 5,287
5 72467 State University Craighead 3,689
6 72116 North Little Rock Pulaski 3,461
7 72227 Little Rock Pulaski 2,999
8 72205 Little Rock Pulaski 2,868
9 72207 Little Rock Pulaski 2,809
10 72211 Little Rock Pulaski 2,688
11 72801 Russellville Pope 2,374
12 72901 Fort Smith Sebastian 2,269
13 72212 Little Rock Pulaski 2,251
14 72719 Centerton Benton 2,149
15 72204 Little Rock Pulaski 2,013
16 72908 Fort Smith Sebastian 1,862
17 72457 Portia Lawrence 1,810
18 72209 Little Rock Pulaski 1,731
19 72903 Fort Smith Sebastian 1,681
20 72904 Fort Smith Sebastian 1,556
21 72758 Rogers Benton 1,540
22 72022 Bryant Saline 1,383
23 72202 Little Rock Pulaski 1,371
24 72114 North Little Rock Pulaski 1,316
25 72139 Russell White 1,069
26 72034 Conway Faulkner 1,049
27 72718 Cave Springs Benton 1,010
28 72113 Maumelle Pulaski 974
29 72703 Fayetteville Washington 893
30 72764 Springdale Washington 887
31 72301 West Memphis Crittenden 840
32 72118 North Little Rock Pulaski 829
33 72762 Springdale Washington 793
34 72630 Diamond City Boone 791
35 72714 Bella Vista Benton 784
36 72180 Woodson Pulaski 774
37 72712 Bentonville Benton 746
38 72201 Little Rock Pulaski 649
39 72120 Sherwood Pulaski 634
40 72715 Bella Vista Benton 599
41 72713 Bentonville Benton 598
42 72730 Farmington Washington 557
43 72223 Little Rock Pulaski 556
44 72076 Jacksonville Pulaski 529
45 72099 Little Rock Air Force Base Pulaski 524
46 72405 Jonesboro Craighead 520
47 72103 Mabelvale Saline 515
48 72377 Rivervale Poinsett 492
49 72745 Lowell Benton 485
50 72401 Jonesboro Craighead 481

Showing the top 50 of 615 ZIP codes in Arkansas that have this figure . 72035 ranks 1st at 13,968, against 481 in 50th place.

Other rankings for Arkansas

Cite this page

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

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