Residential delivery area · Maryland
ZIP Code 20854: Potomac, MD
ZIP code 20854 is in Potomac, Maryland, entirely in Montgomery County (Census 2020 ZIP-county file). About 50,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $250,000 or more (Census Bureau, ACS 2020-2024). By Census place, its land lies in Potomac (57%) and Travilah (35%), and 8% in smaller places.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Potomac · its only residential ZIP
- County
- Montgomery County
- Census places
- Potomac (57%) census-designated place; Travilah (35%) census-designated place
- Metro area
- Washington-Arlington-Alexandria, DC-VA-MD-WV
- House district
- MD-8 119th Congress
- State
- Maryland
- Time zone
- Eastern
- Land area
- 33.8 sq mi · 1,492 people per sq mi
- PO Box ZIPs
- 20859 also use the name Potomac
Where is ZIP code 20854?
20854 centers on 39.033°, -77.221° and covers 33.8 square miles of land plus 3.0 of water. It borders 9 ZIP codes: 20817, 20850, 22066, 20818, 20852, 22102, 20878, 22101, 20874.
The map draws ZIP code areas only. For the streets inside 20854, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 20854 compare with the rest of Montgomery County?
| Measure | 20854 | In Montgomery County | In MD |
|---|---|---|---|
| People (ACS 2020-2024) | 50,498 | 6th of 53 | 16th of 477 |
| Median household income | $250k+ | 1st of 41 | 1= of 293 |
| Median home value | $1.17M | 5th of 41 | 5th of 320 |
1= means a shared first place: 20854's median household income ties with 3 other ZIP codes at the Census cap in Maryland.
Its median household income is at the Census cap of $250,000 or more, like 117 other U.S. residential ZIP codes (69 of the 118 are large enough to rank), and it is denser than 82% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 20854?
The 2020 Census counted 50,698 people in 20854; the ACS, which samples households over 2020-2024, estimates 50,498. Between the 2010 and 2020 censuses its population grew 2.2% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 50,498
- 2020 Census count
- 50,698+2.2% since 2010 (49,611)
- Households
- 16,751
- Median age
- 47.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 20854?
Of the 50,498 people the ACS estimates in 20854, 24.1% are under 18 and 23.6% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (58.2%), then Asian (not Hispanic) (22.2%).
- Under 1824.1%
- 18 to 6452.3%
- 65 and older23.6%
- White, not Hispanic58.2%
- Asian, not Hispanic22.2%
- Hispanic or Latino9.4%
- Other or two or more6.2%
- Black, not Hispanic4.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 20854 earn?
Median household income is $250,000 or more (ACS 2020-2024), the highest of the 41 ranked ZIP codes in Montgomery County.
- Median household income
- $250,000 or more
- Income per person
- $114,794
- Below the poverty line
- 2.6%
- Unemployed (of the labor force)
- 3.0%
- Adults 25+ with a bachelor's degree
- 85.7%
- Adjusted gross income per tax return, 2022
- $341,11223,150 returns; wages 47% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 20854?
FHFA's house price index for 20854, built from repeat sales and appraisals of the same homes, rose 49% from 2015 to 2025 and rose 43% from 2020 to 2025, and moved +3.7% in 2025.
- Median home value (owners' estimate)
- $1,165,400
- Median gross rent
- $3,500 or more
- Homes owned by their occupants
- 89.4%
- Housing units
- 17,311
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 20854?
1,230 business establishments had a location in this ZIP code in 2023, 90 more than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services403
- Health care and social assistance177
- Real estate and rental and leasing116
- Other services (except public administration)77
- Finance and insurance70
- Construction69
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 20854?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 20817 | Bethesda | 37,454 | $249k | 4.4 mi |
| 20850 | Rockville | 50,353 | $126k | 4.5 mi |
| 22066 | Great Falls, VA | 17,185 | $250k+ | 4.6 mi |
| 20818 | Cabin John | 1,539 | $246k | 5.2 mi |
| 20852 | Rockville | 48,180 | $123k | 5.4 mi |
| 22102 | McLean, VA | 29,184 | $154k | 5.7 mi |
| 20878 | Gaithersburg | 66,115 | $144k | 5.7 mi |
| 22101 | McLean, VA | 30,953 | $250k+ | 7.1 mi |
| 20874 | Germantown | 62,738 | $115k | 8.2 mi |
| 20812 | Glen Echo | 276 | $214k | 6.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.
Which other ZIP codes use the name Potomac?
1 more ZIP code carries the postal name Potomac, MD without a residential delivery area: PO boxes at the post office, or a single organization with its own ZIP code. The Census Bureau publishes no figures for it.
| ZIP | County |
|---|---|
| 20859 | Montgomery County |
Source: GeoNames postal codes (CC BY 4.0), downloaded 2026-10-09; a ZIP code with no Census ZCTA has no residential delivery area.