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Montgomery County, Maryland ZIP code demographics

53 ZIP Code Tabulation Areas in Montgomery County, Maryland. The population-weighted median household income is about $138,859, the median home value about $683,658, and 65.6% of occupied homes are owner-occupied.

53
ZIP codes
1.2M
Population
53
Data points

Montgomery County at a glance

$138,859
Median household income
$683,658
Median home value
40.4
Median age
65.6%
Owner-occupied
451,209
Housing units

Income, home value, and age are population-weighted averages of the ZIP-level medians in the file. Counts are exact.

Top 5 Montgomery County ZIP codes by median household income
#ZIPCityPopulationHomeowner %Median HH $
120854Darnestown50,49889.4%$250,001
220896Garrett Park93296.6%$250,001
320838Barnesville30697.8%$250,001
420817Bethesda37,45481.4%$249,332
520818Cabin John1,53995.3%$245,982
Top 5 Montgomery County ZIP codes by population
#ZIPCityPopulationHomeowner %Median HH $
120906Aspen Hill70,59566.4%$97,521
220878Darnestown66,11569.2%$144,313
320874Darnestown62,73866.4%$115,022
420904Beltsville58,64648.9%$96,025
520902Forest Glen54,26164.4%$114,486
Top 5 Montgomery County ZIP codes by Homeowner GDP
#ZIPCityPopulationHomeowner %Median HH $Homeowner GDP
120854Darnestown50,49889.4%$250,001$3.7B
220817Bethesda37,45481.4%$249,332$2.8B
320878Darnestown66,11569.2%$144,313$2.4B
420874Darnestown62,73866.4%$115,022$1.7B
520906Aspen Hill70,59566.4%$97,521$1.7B

Homeowner GDP = owner-occupied units × median household income — a proxy for aggregate homeowner spending power in a ZIP, useful for scoring market opportunity. Not an official economic statistic.

Densest: 20910 (Forest Glen) at 9,996 people/sq mi. Least dense: 20842 at 43 people/sq mi.

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