Zip Code 20817
Bethesda, Maryland — Montgomery County
📍 ZIP code 20817 is in Bethesda, Montgomery County, Maryland.
ZIP code 20817 is located in Bethesda, Montgomery County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 37,738. The area code for ZIP code 20817 is 301.
Quick Answer
Zip code 20817 is in Bethesda, Maryland (Montgomery County). It has a population of 37,738, median household income of $240,104, and median home value of $1,142,300.
Population
37,738
Income
$240,104
Home Value
$1,142,300
Climate
88°F / 26°F
About Zip Code 20817
Zip code 20817 is located in Bethesda, Maryland, within Montgomery County. Home to approximately 37,738 residents, this area sits at an elevation of 260 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $240,104 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $1,142,300, and the cost of living index is 250 (150% above the national average of 100).
Summers average a high of 88°F while winters drop to 26°F. The area receives about 49 in of rain and 6 in of snow annually. The zip code covers 13.9 square miles of land area and 0.1 square miles of water.
Key Statistics
37,738
$240,104
$1,142,300
Eastern (EST/EDT)
301
260 ft
13.9 sq mi
45.5
14,363
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Compare With Nearby Zip Codes
| Metric | 20817 | 20818 | 20812 | 20814 | 20816 | 22101 |
|---|---|---|---|---|---|---|
| City | Bethesda, MD | Cabin John, MD | Glen Echo, MD | Bethesda, MD | Bethesda, MD | Mc Lean, VA |
| Population | 37,738 | 1,602 | 314 | 30,822 | 18,081 | 31,306 |
| Median Income | $240,104 | $221,392 | $195,000 | $150,401 | $231,284 | $250,001 |
| Home Value | $1,142,300 | $1,273,300 | $1,128,500 | $976,500 | $1,166,100 | $1,282,800 |
| Cost of Living | 250 | 250 | 250 | 250 | 250 | 250 |
| Median Age | 45.5 | 49 | 47.7 | 41.3 | 43.7 | 46.5 |
Cost of Living
100 = National Average. Bethesda's cost of living is 150% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
4.8x
Demographics
Zip code 20817 has a population of 37,738 people with a median age of 45.5. There are 14,363 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Bethesda (20817) population trend from 2010 to 2024
↑ 8.4%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
88°F
26°F
49 in
6 in
Bethesda experiences warm summers with average highs around 88°F. Winters are cool with lows averaging 26°F. The area receives about 6 in of snow per year.
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Housing & Economy
Median Home Value
$1,142,300
Median Household Income
$240,104
With 14,363 housing units across 13.9 square miles, 20817 has a housing density of 1,033 units per square mile. The home price-to-income ratio is 4.8x.
Location & Geography
Latitude
38.9973°
Longitude
-77.1518°
Land Area
13.9 sq mi
Water Area
0.1 sq mi
Nearby Zip Codes
Zip codes closest to 20817 (Bethesda, MD) with distances:
All Zip Codes in Bethesda, MD
Other zip codes serving Bethesda:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 20817's $240,104. A way to compare Bethesda 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 20817 (Bethesda, 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 Bethesda, Maryland?
Bethesda, Maryland uses zip code 20817 along with 3 other zip codes.
What county is zip code 20817 in?
Zip code 20817 is located in Montgomery County, Maryland.
What is the population of zip code 20817?
The population of zip code 20817 is 37,738 with a median age of 45.5.
Is 20817 in Bethesda, Maryland?
Yes, zip code 20817 is in Bethesda, Montgomery County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 20817 in?
Zip code 20817 is in Bethesda, Maryland. It is part of Montgomery County and uses the Eastern (EST/EDT) timezone.
What is zip code 20817?
Zip code 20817 is a U.S. postal code in Bethesda, Maryland (Montgomery County). It has a population of 37,738 and covers 13.9 square miles.
What is the population of zip code 20817?
The population of zip code 20817 (Bethesda, MD) is 37,738 with a median age of 45.5. There are approximately 14,363 housing units in this area.
What is the median income in zip code 20817?
The median household income in zip code 20817 (Bethesda, MD) is $240,104 per year. The cost of living index is 250 (100 = national average).
What is the average home price in zip code 20817?
The median home value in zip code 20817 (Bethesda, MD) is $1,142,300. The cost of living index is 250 compared to the national average of 100.
What county is zip code 20817 in?
Zip code 20817 is located in Montgomery County, Maryland. The primary city is Bethesda.
What is the area code for zip code 20817?
Zip code 20817 in Bethesda, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 20817 a good place to live?
Zip code 20817 (Bethesda, MD) has a cost of living index of 250 (100 = national average), a median household income of $240,104, and median home values of $1,142,300. The median age is 45.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 20817?
The cost of living index for zip code 20817 (Bethesda, MD) is 250, where 100 represents the national average. This area is above the national average. Median home value: $1,142,300.
What schools serve zip code 20817?
Zip code 20817 in Bethesda, 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.