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Zip Code 20817 — Bethesda, MD

ZIP Code 20817 is associated with Bethesda, MD, in Montgomery County. The listed population estimate is 37,454; estimated density is 1,030.1 people per square mile. Among records with population estimates, it ranks #11 of 46 in Montgomery County and #54 of 470 in MD.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (38.998090, -77.149190)

Data MetricLocal Statistic
Postal / Zip Code20817
Primary CityBethesda
State / ProvinceMD
CountyMontgomery
Total Population37,454
Population Density1,030.1 people/sq mi
TimezoneAmerica/New_York

How 20817 Compares

MetricZIP 20817Montgomery County recordsMD records
Population estimate37,4541,076,754 (sum)6,205,597 (sum)
Population Density1,030.1 /sq mi----
County population rank#11 of 46----
State population rank#54 of 470----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MD

ZIP CodeCityDistancePopulation estimate
ZIP 20818Cabin John1.8 mi1,539
ZIP 20812Glen Echo2.2 mi276
ZIP 20892Bethesda2.4 miN/A
ZIP 20894Bethesda2.5 miN/A
ZIP 20814Bethesda2.5 mi32,795

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →