20854 ZIP Code, Potomac, MD

20854 is a ZIP code in Potomac, Maryland in Montgomery County. It covers 34 square miles of land. The closest ZIP codes are 20817, 20850 and 22066. 50,498 people live here in 16,751 households, more than in 9 of every 10 Maryland ZIP codes. At about 1,492 people per square mile it has suburban density, and most homes are owner-occupied (89%). Median household income is $250,000+, well above the Maryland median of $103,678; the median age is 47.7, older than most ZIP codes.

Quick facts

Key figures

MeasureValue
Residents50,498
Households16,751
Median household income$250,000+
Income per person$114,794
Median age47.7
Homeowners89.4%
Median home value$1,165,400
Median rent$3,501
Bachelor's degree or higher85.7%
Average commute (minutes)29.6
Households with kids under 1838.7%
Moved in the past year8.1%
Below the poverty line2.6%
Broadband internet98.5%
Speak a non-English language at home37.3%

Household income

% of householdsValue
<$10K1.4%
$10–15K1.5%
$15–25K1.3%
$25–35K1.0%
$35–50K2.2%
$50–75K4.9%
$75–100K3.6%
$100–150K9.1%
$150–200K10.5%
$200K+64.5%

Age

% of all residentsValue
<109.7%
10–1917.1%
20–244.1%
25–344.6%
35–4410.5%
45–5415.9%
55–6414.5%
65–7412.9%
75+10.7%

Tenure

% of housing unitsValue
Owned, with mortgage56.1%
Owned outright30.6%
Rented10.1%
Vacant3.2%

Type of building

% of housing unitsValue
Detached house82.4%
Townhome11.8%
2–4 units0.2%
5–19 units0.6%
20+ units4.4%
Mobile / other0.5%

Businesses in 20854

1,230 business establishments with 12,073 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

20854 has 52 USPS carrier routes with 17,813 residential and 439 business mailboxes. Open the EDDM route map.

Carrier routes in 20854

20854 has 52 USPS carrier routes (52 city (C)) with 17,813 residential and 439 business mailboxes. Routes range from 226 homes (C034) to 597 homes (C044); the median route has 332 homes. The Census counted 16,751 households in 20854 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2491
250–49950
500–7491
750–9990
1,000–1,4990
1,500+0

Best routes in 20854 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C036 — USPS business mailboxes 85, 281 homes
  2. Route C055 — USPS business mailboxes 79, 309 homes
  3. Route C052 — USPS business mailboxes 49, 344 homes
  4. Route C044 — USPS business mailboxes 48, 597 homes
  5. Route C067 — USPS business mailboxes 39, 426 homes

Select these 5 routes on the route map

Every carrier route in 20854

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City3261$200,001+———
C002City3313$26,762———
C004City26912$200,001+———
C008City3230$200,001+———
C009City3226$200,001+———
C010City3351$200,001+———
C013City3471$200,001+———
C015City3270$200,001+———
C017City3550$200,001+———
C018City4460$200,001+———
C019City3760$200,001+———
C020City2824$200,001+———
C021City3595$200,001+———
C024City4381$200,001+———
C026City3680$200,001+———
C027City3112$200,001+———
C029City4080$200,001+———
C030City3351$200,001+———
C031City4361$200,001+———
C032City2722$200,001+———
C033City3162$200,001+———
C034City2262$200,001+———
C035City2803$200,001+———
C036City28185$200,001+———
C037City3515$200,001+———
C039City3880$200,001+———
C040City3010$200,001+———
C041City38432$200,001+———
C042City3633$200,001+———
C044City59748$200,001+———
C047City35412$200,001+———
C049City2541$172,339———
C051City3084$194,500———
C052City34449$172,339———
C055City30979$200,001+———
C056City3400$200,001+———
C057City2930$200,001+———
C058City2642$200,001+———
C059City3323$200,001+———
C060City3160$200,001+———
C061City4902$200,001+———
C062City3280$200,001+———
C064City33018$200,001+———
C065City3010$200,001+———
C067City42639$200,001+———
C070City2702$200,001+———
C072City3400$200,001+———
C074City4450$200,001+———
C076City2914$200,001+———
C077City3670$200,001+———
C078City3500$200,001+———
C079City3084$194,500———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 20854 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 20854

Where it ranks

Mail every home in 20854

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 20854, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 20854 in?
20854 is a Potomac, MD mailing address. By land area, 57% lies inside Potomac, 35% lies inside Travilah, 4% lies inside Rockville and 4% lies inside Darnestown.
What county is 20854 in?
20854 is in Montgomery County.
What is the population of 20854?
About 50,498 people (±2,603), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 50,698.
What is the median household income in 20854?
$250,000+, compared with $103,678 for Maryland as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 20854?
52 USPS carrier routes with 17,813 residential and 439 business mailboxes (18,224 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 20854?
The closest, measured center to center: 20817 (4.4 mi, Bethesda), 20850 (4.5 mi, Rockville), 22066 (4.6 mi, Great Falls), 20818 (5.2 mi, Cabin John), 20852 (5.4 mi, North Bethesda) and 20878 (5.7 mi, Gaithersburg).

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