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/MD/HIGHEST-MEDIAN-INCOME

ZIP Codes With the Highest Median Household Income in Maryland

What this measures. Median household income, American Community Survey 5-year estimate. Source: Census American Community Survey, data release 2026-10-12.

# ZIP City County Median household income
1 20759 Fulton Howard $250,000+
2 20838 Barnesville Montgomery $250,000+
3 20854 Potomac Montgomery $250,000+
4 20896 Garrett Park Montgomery $250,000+
5 21056 Gibson Island Anne Arundel $250,000+
6 21737 Glenelg Howard $250,000+
7 21738 Glenwood Howard $250,000+
8 20817 Bethesda Montgomery $249,332
9 20818 Cabin John Montgomery $245,982
10 21029 Clarksville Howard $243,542
11 21723 Cooksville Howard $241,250
12 20758 Friendship Anne Arundel $240,847
13 20630 Drayden St. Mary's $233,411
14 21051 Fork Baltimore $232,721
15 20816 Bethesda Montgomery $232,656
16 21794 West Friendship Howard $231,466
17 20777 Highland Howard $226,146
18 21153 Stevenson Baltimore $220,179
19 21036 Dayton Howard $218,036
20 20812 Glen Echo Montgomery $213,750
21 21071 Glyndon Baltimore $213,500
22 20778 West River Anne Arundel $205,974
23 20833 Brookeville Montgomery $204,375
24 20842 Dickerson Montgomery $204,013
25 20692 Valley Lee St. Mary's $201,250
26 21131 Phoenix Baltimore $197,619
27 20815 Chevy Chase Montgomery $194,971
28 21104 Marriottsville Howard $191,804
29 20645 Issue Charles $191,429
30 21042 Ellicott City Howard $190,061
31 20862 Brinklow Montgomery $189,667
32 21797 Woodbine Howard $189,241
33 21035 Davidsonville Anne Arundel $188,347
34 20841 Boyds Montgomery $184,688
35 20882 Gaithersburg Montgomery $184,136
36 21770 Monrovia Frederick $183,571
37 21754 Ijamsville Frederick $182,188
38 20684 Saint Inigoes St. Mary's $180,060
39 20779 Tracys Landing Anne Arundel $178,452
40 20871 Clarksburg Montgomery $177,523
41 20837 Poolesville Montgomery $174,063
42 20895 Kensington Montgomery $173,625
43 21146 Severna Park Anne Arundel $172,122
44 20674 Piney Point St. Mary's $171,985
45 21013 Baldwin Baltimore $171,354
46 21774 New Market Frederick $171,103
47 21140 Riva Anne Arundel $170,156
48 21032 Crownsville Anne Arundel $168,653
49 20832 Olney Montgomery $168,524
50 20754 Dunkirk Calvert $167,371

Showing the top 50 of 420 ZIP codes in Maryland that have this figure . 20759 ranks 1st at $250,000+, against $167,371 in 50th place.

Other rankings for Maryland

Cite this page

zipcodes.pro. “ZIP Codes With the Highest Median Household Income in Maryland.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/rankings/md/highest-median-income

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