Zip Code 20854
Potomac, Maryland — Montgomery County
📍 ZIP code 20854 is in Potomac, Montgomery County, Maryland.
ZIP code 20854 is located in Potomac, Montgomery County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 49,694. The area code for ZIP code 20854 is 301.
Quick Answer
Zip code 20854 is in Potomac, Maryland (Montgomery County). It has a population of 49,694, median household income of $250,001, and median home value of $1,105,300.
Population
49,694
Income
$250,001
Home Value
$1,105,300
Climate
87°F / 27°F
About Zip Code 20854
Zip code 20854 is located in Potomac, Maryland, within Montgomery County. Home to approximately 49,694 residents, this area sits at an elevation of 378 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $250,001 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $1,105,300, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 87°F while winters drop to 27°F. The area receives about 41 in of rain and 9 in of snow annually. The zip code covers 33.8 square miles of land area and 2.8 square miles of water.
Key Statistics
49,694
$250,001
$1,105,300
Eastern (EST/EDT)
301
378 ft
33.8 sq mi
47.6
17,119
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Compare With Nearby Zip Codes
| Metric | 20854 | 20817 | 20850 | 22066 | 20818 | 20852 |
|---|---|---|---|---|---|---|
| City | Potomac, MD | Bethesda, MD | Rockville, MD | Great Falls, VA | Cabin John, MD | Rockville, MD |
| Population | 49,694 | 37,738 | 50,365 | 16,884 | 1,602 | 47,857 |
| Median Income | $250,001 | $240,104 | $122,691 | $250,001 | $221,392 | $121,496 |
| Home Value | $1,105,300 | $1,142,300 | $687,200 | $1,240,100 | $1,273,300 | $646,100 |
| Cost of Living | 250 | 250 | 209 | 250 | 250 | 201 |
| Median Age | 47.6 | 45.5 | 40.8 | 46.4 | 49 | 38.7 |
Cost of Living
100 = National Average. Potomac's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.4x
Demographics
Zip code 20854 has a population of 49,694 people with a median age of 47.6. There are 17,119 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Potomac (20854) population trend from 2010 to 2024
↑ 14.3%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
27°F
41 in
9 in
Potomac experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 27°F. The area receives about 9 in of snow per year.
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Housing & Economy
Median Home Value
$1,105,300
Median Household Income
$250,001
With 17,119 housing units across 33.8 square miles, 20854 has a housing density of 506 units per square mile. The home price-to-income ratio is 4.4x.
Location & Geography
Latitude
39.0328°
Longitude
-77.2208°
Land Area
33.8 sq mi
Water Area
2.8 sq mi
Nearby Zip Codes
Zip codes closest to 20854 (Potomac, MD) with distances:
Related Cities in Maryland
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 20854's $250,001. A way to compare Potomac to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 20854 (Potomac, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Potomac, Maryland?
Potomac, Maryland uses zip code 20854.
What county is zip code 20854 in?
Zip code 20854 is located in Montgomery County, Maryland.
What is the population of zip code 20854?
The population of zip code 20854 is 49,694 with a median age of 47.6.
Is 20854 in Potomac, Maryland?
Yes, zip code 20854 is in Potomac, Montgomery County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 20854 in?
Zip code 20854 is in Potomac, Maryland. It is part of Montgomery County and uses the Eastern (EST/EDT) timezone.
What is zip code 20854?
Zip code 20854 is a U.S. postal code in Potomac, Maryland (Montgomery County). It has a population of 49,694 and covers 33.8 square miles.
What is the population of zip code 20854?
The population of zip code 20854 (Potomac, MD) is 49,694 with a median age of 47.6. There are approximately 17,119 housing units in this area.
What is the median income in zip code 20854?
The median household income in zip code 20854 (Potomac, MD) is $250,001 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 20854?
The median home value in zip code 20854 (Potomac, MD) is $1,105,300. The cost of living index is 250 compared to the national average of 100.
What county is zip code 20854 in?
Zip code 20854 is located in Montgomery County, Maryland. The primary city is Potomac.
What is the area code for zip code 20854?
Zip code 20854 in Potomac, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 20854 a good place to live?
Zip code 20854 (Potomac, MD) has a cost of living index of 250 (100 = national average), a median household income of $250,001, and median home values of $1,105,300. The median age is 47.6. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 20854?
The cost of living index for zip code 20854 (Potomac, MD) is 250, where 100 represents the national average. This area is above the national average. Median home value: $1,105,300.
What schools serve zip code 20854?
Zip code 20854 in Potomac, Maryland is served by the local school district of Montgomery County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.