Cabin John is a community in Montgomery County, Maryland, home to about 2,179 people across 1.2 square miles. Its ZIP code is 20818, and parts of 20812 and 20817 are in Cabin John too.
Homes sold for a median of $484 per square foot in the three months ending August 2026, a seller’s market.
All in Cabin John
Mostly Glen Echo; part is in Cabin John
Mostly Bethesda; part is in Cabin John
Each card is that ZIP code’s whole market, including any part outside Cabin John. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Cabin John’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Ronald Reagan Washington National Airport (DCA)11 miles away |
|---|---|
| Nearest city of 250,000+ | Washington, DC9 miles away |
| Nearest city of 1 million+ | Philadelphia, PA129 miles away |
Straight-line distances from the center of Cabin John; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Cabin John had 2,459 residents in the 2020 census, up 42% since 2000.
It’s the 276th largest of 527 towns in Maryland by population.
Montgomery County grew from 30,451 residents in 1900 to 1,062,061 in 2020.
Montgomery County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 88°F in summer, and winter lows average 26°F. About 48.3 inches of rain and melted snow fall in a typical year, with about 6 inches of snow.
Source: NOAA 1991–2020 climate normals, Dalecarlia Rsvr, MD weather station (4 miles away).
439,792 jobs at 27,677 businesses in Montgomery County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
44 doctors and other health care providers list an office in Cabin John.
Nearest hospitals
Providers with an office here
| Specialist doctors | 2 |
|---|---|
| Mental health providers | 40 |
| Physical and occupational therapists | 1 |
| Chiropractors | 1 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (5 nearby)
Grocery stores
Pharmacies
Libraries
Museums
Theaters and performance venues
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Bethesda, Potomac, North Bethesda, Glen Echo and Brookmont.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.