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/DC/LARGEST-POPULATION

ZIP Codes With the Largest Population in District of Columbia

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 20002 Washington District of Columbia 72,397
2 20011 Washington District of Columbia 67,434
3 20019 Washington District of Columbia 63,380
4 20020 Washington District of Columbia 53,005
5 20009 Washington District of Columbia 50,150
6 20001 Washington District of Columbia 44,616
7 20032 Washington District of Columbia 40,920
8 20003 Washington District of Columbia 37,482
9 20016 Washington District of Columbia 32,730
10 20010 Washington District of Columbia 31,808
11 20008 Washington District of Columbia 29,434
12 20007 Washington District of Columbia 24,602
13 20017 Washington District of Columbia 21,208
14 20018 Washington District of Columbia 19,562
15 20012 Washington District of Columbia 17,519
16 20024 Washington District of Columbia 15,888
17 20015 Washington District of Columbia 15,653
18 20037 Washington District of Columbia 13,156
19 20005 Washington District of Columbia 13,131
20 20036 Washington District of Columbia 4,605
21 20057 Washington District of Columbia 3,229
22 20052 Washington District of Columbia 2,730
23 20004 Washington District of Columbia 1,831
24 20064 Washington District of Columbia 1,442
25 20006 Washington District of Columbia 1,362
26 20059 Washington District of Columbia 1,338
27 20373 Naval Anacost Annex District of Columbia 383
28 20390 Washington District of Columbia 246
29 20319 Washington District of Columbia 23
30 20317 Washington District of Columbia 15
31 20422 Washington District of Columbia 15
32 20045 Washington District of Columbia 0
33 20204 Washington District of Columbia 0
34 20220 Washington District of Columbia 0
35 20230 Washington District of Columbia 0
36 20240 Washington District of Columbia 0
37 20245 Washington District of Columbia 0
38 20250 Washington District of Columbia 0
39 20260 Washington District of Columbia 0
40 20388 Washington Navy Yard District of Columbia 0
41 20408 Washington District of Columbia 0
42 20415 Washington District of Columbia 0
43 20418 Washington District of Columbia 0
44 20427 Washington District of Columbia 0
45 20431 Washington District of Columbia 0
46 20510 Washington District of Columbia 0
47 20515 Washington District of Columbia 0
48 20520 Washington District of Columbia 0
49 20530 Washington District of Columbia 0
50 20535 Washington District of Columbia 0

Showing the top 50 of 57 ZIP codes in District of Columbia that have this figure . 20002 ranks 1st at 72,397, against 0 in 50th place.

Other rankings for District of Columbia

Cite this page

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

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