Which ZIP code in Montgomery County has the highest median household income?

20854 (Potomac), at $250,000+, among 36 ZIP codes with at least 1,000 residents.

Why are some ZIP codes missing?

ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

Richest ZIP codes in Montgomery County, MD

These are the 25 ZIP codes in Montgomery County with the highest median household income, out of 36 with at least 1,000 residents. 20854 (Potomac, $250,000+), 20817 (Bethesda, $249,332) and 20818 (Cabin John, $245,982) lead the list. There is no single "best" ZIP code in Montgomery County; the right one depends on who you want to reach, so the same ZIP codes are ranked several ways below.

Richest ZIP codes in Montgomery County

Rank	ZIP	Mailing city	Median household income	Residents	Households	Residential mailboxes
1	20854	Potomac	$250,000+	50,498	16,751	17,813
2	20817	Bethesda	$249,332 ±$9,996	37,454	13,660	14,986
3	20818	Cabin John	$245,982 ±$53,171	1,539	593	684
4	20816	Bethesda	$232,656 ±$21,899	18,140	6,400	6,663
5	20833	Brookeville	$204,375 ±$41,981	7,860	2,568	2,686
6	20842	Dickerson	$204,013 ±$9,864	2,369	802	753
7	20815	Chevy Chase	$194,971 ±$11,837	30,505	12,937	14,980
8	20841	Boyds	$184,688 ±$28,687	9,969	2,919	3,217
9	20882	Gaithersburg	$184,136 ±$15,841	13,751	4,693	4,737
10	20871	Clarksburg	$177,523 ±$13,731	30,182	9,347	10,397
11	20837	Poolesville	$174,063 ±$40,750	6,699	2,366	2,359
12	20895	Kensington	$173,625 ±$9,225	19,184	6,991	7,524
13	20832	Olney	$168,524 ±$6,040	25,553	8,411	9,035
14	20861	Ashton	$163,438 ±$35,439	2,890	917	1,049
15	20905	Silver Spring	$159,740 ±$17,283	19,004	5,899	5,788
16	20853	Rockville	$159,080 ±$12,371	31,851	9,692	9,938
17	20814	Bethesda	$150,996 ±$8,322	32,795	14,904	18,961
18	20855	Derwood	$149,110 ±$11,297	17,279	6,437	6,958
19	20878	Gaithersburg	$144,313 ±$7,146	66,115	24,237	25,897
20	20872	Damascus	$141,050 ±$16,110	13,983	4,659	4,948
21	20866	Burtonsville	$140,308 ±$15,686	15,986	5,033	5,051
22	20901	Silver Spring	$131,386 ±$12,228	36,435	13,114	13,058
23	20851	Rockville	$126,411 ±$14,826	14,946	5,155	5,051
24	20850	Rockville	$125,950 ±$7,840	50,353	21,159	23,039
25	20852	Rockville	$122,472 ±$5,633	48,180	21,743	25,118

How we ranked them

Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population. ZIP codes need at least 1,000 residents to be ranked; 36 of 48 qualify.

Which of these to mail, and why

Higher-income ZIP codes suit offers with a bigger ticket: remodeling, pools, roofing, financial planning, private schools, premium dining. A median describes the middle household, not every door, so the routes inside each ZIP still vary.

The top five ZIP codes on this list hold 39,972 households, on 117 carrier routes with 42,832 residential mailboxes. Open any of them on the route map to see each carrier route's own figures before you choose.

Open 20854 on the EDDM route map

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Businesses that mail these ZIP codes

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Frequently asked questions

Which ZIP code in Montgomery County has the highest median household income?: 20854 (Potomac), at $250,000+, among 36 ZIP codes with at least 1,000 residents.
How is this ranking calculated?: Ranked by median household income (ACS 5-year estimates, 2020–2024). The Census Bureau caps published medians at $250,000; ZIP codes at the cap are shown as $250,000+ and ordered by population.
Why are some ZIP codes missing?: ZIP codes with fewer than 1,000 residents are left out because their survey estimates swing too much to rank, and so are ZIP codes where the Census Bureau did not publish this figure.

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.