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Maryland ZIP Codes
Montgomery County
Poolesville, MD
20837
20837 ZIP Code — Poolesville, MD
Montgomery County, Maryland
ZIP code 20837 is located in
Poolesville ,
Maryland ,
within Montgomery County .
It covers approximately 40.28 square miles and serves a population of
6,651 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 240/301 .
About ZIP code 20837
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1970s, giving the area an established character. Median home value is $599,900. Owner-occupancy is high at 92%, well above the national average.
Median household income is $193,264.
The dominant occupation class is management, business, and professional, with professional and management as the leading industry. An above-average commute of 39 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 36% of workers work from home.
Educational attainment is high — 63% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Overall, ZIP code 20837 reflects a community defined by a highly educated population, high homeownership, and a high rate of remote workers.
20837 ZIP code map
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Cities in ZIP code 20837
Below are the cities the US Postal Service accepts for ZIP code 20837. Using any city not on this list may result in mail delivery delays.
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
6,651
Population density
165 / sq mi
State FIPS
24
County FIPS
031
Geography
Land area
40.28 sq mi
Water area
3.06 sq mi
Latitude
39.1165
Longitude
-77.4150
Timezone
Eastern (ET)
Area code
240/301
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
16.2%
20.6%
28.2%
$50k – $100k
11.5%
24.2%
28.2%
$100k – $200k
37.0%
31.9%
30.1%
Over $200k
35.3%
23.3%
13.4%
Demographics & statistics
$193,264
Median household income
$599,900
Median home value
$1,968
Median monthly rent
63.3%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 1,479 22.2% 18 and over 5,172 77.8% 65 and over 1,002 15.1% Median age 44.9 years
Race & ethnicity
Black or African American
2.9%
Group Count % White 5,222 73.5% Asian 521 7.3% Hispanic or Latino 456 6.4% Two or more races 413 5.8% Other race 290 4.1% Black or African American 205 2.9%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
16.2%
20.6%
28.2%
$50k – $100k
11.5%
24.2%
28.2%
$100k – $200k
37.0%
31.9%
30.1%
Over $200k
35.3%
23.3%
13.4%
Range % of households Under $10k 4.7% $10k–$15k 3.4% $35k–$50k 4.9% $50k–$75k 6.9% $75k–$100k 8.6% $100k–$150k 13.1% $150k–$200k 12.2% $200k+ 46.2% Median income $193,264
Housing
Housing overview
Metric Value Median home value $599,900 Median rent / month $1,968 Owner occupied 91.6% Renter occupied 8.4% Vacant 7.4% Single-family detached 88.0% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 10.0 Avg household size (owned) 2.91
Year built
Era % 2020 or later 0.9% 2010–2019 16.9% 2000–2009 1.6% 1990–1999 26.1% 1980–1989 6.7% 1970–1979 36.2% 1960–1969 5.7% 1950–1959 0.0% 1940–1949 1.8% 1939 or earlier 4.1%
Bedrooms
Size % of units No bedroom (studio) 0.8% 1 bedroom 0.9% 2 bedrooms 4.9% 3 bedrooms 22.6% 4 bedrooms 52.7% 5+ bedrooms 18.1%
Vehicles per household
Vehicles % of households No vehicle 0.0% 1 vehicle 10.4% 2 vehicles 58.5% 3 or more 31.2%
Heating fuel
Fuel type % Utility gas 47.6% Electricity 41.4% Propane / LP gas 5.2% Fuel oil 4.3% Wood 1.5%
Households & families
Household type Count % Married-couple family 1,596 70.4% Cohabiting couple 61 2.7% Male householder, no spouse 161 7.1% Female householder, no spouse 448 19.8% Households with children under 18 919 40.6% Households with seniors (65+) 643 28.4% Average household size 2.93
Marital status
Status Male Female Never married 19.6% 18.8% Married 70.9% 62.4% Separated 0.0% 1.6% Widowed 0.0% 7.2% Divorced 9.6% 9.9%
Education
Some college, no degree
13.5%
Graduate / professional
28.5%
Metric % HS diploma or higher 94.1% Bachelor's or higher 63.3%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 157 9.0% Kindergarten 166 9.5% Elementary school 616 35.3% High school 302 17.3% College / grad school 502 28.8%
Employment
Industry of employment
Professional & management
23.3%
Public administration
12.2%
Education & healthcare
11.7%
Arts, food & hospitality
6.8%
Finance & real estate
3.7%
Agriculture & mining
1.3%
Transportation & utilities
0.6%
Occupation
Category % Management, business & arts 68.3% Service 8.7% Sales & office 10.0% Natural resources & construction 7.8% Production & transportation 5.2%
Employment type
Type % Private sector 72.9% Government 21.1% Self-employed 5.6% Unpaid family workers 0.4%
Commute
Method % Drive alone 56.0% Carpool 5.1% Public transit 0.1% Walk 1.9% Work from home 35.8% Other means 1.1% Avg commute (minutes) 38.5
Poverty
Married-couple families
2.4%
Female-led households
36.9%
Income support
Source % of households Social Security 22.9% Retirement income 25.4% Supplemental Security 2.0% Cash public assistance 2.8% Food stamps / SNAP 1.5%
Health indicators
Condition % Obesity 21.6% High blood pressure 26.2% High cholesterol 33.8% Diabetes 6.9% Heart disease 4.3% Stroke 2.0% Asthma 8.4% Arthritis 18.7% Kidney disease 2.1% Pulmonary disease 4.2% Cancer 6.0%
Behavior / access % Smoking 9.4% Binge drinking 15.0% No physical activity 13.8% Less than 7 hrs sleep 28.5% Depression 17.6% Fair or poor health 7.8% Poor mental health 11.8% Poor physical health 6.3% No health insurance 8.4% Visited doctor (checkup) 71.9% Visited dentist 74.2% Cholesterol screening 93.9% Teeth loss 6.0%
Veterans & disability
Veterans Count % Civilian veterans 367 7.2%
Disability % Any disability 8.4% Under 18 1.0% 18–64 years 6.1% 65 and over 28.8%
Health insurance coverage
Type % Private insurance 93.2% Public insurance 16.2% No insurance 1.8% Uninsured under 19 1.4%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 6,223 93.6% Spanish 513 8.2% Other Indo-European 300 4.8% Asian & Pacific Islander 45 0.7% Other languages 168 2.7%
Place of birth & citizenship
Origin Count % Native born (US) 5,678 85.4% Born in same state 5,619 84.5% Born in different state 2,141 32.2% Foreign born 59 0.9% Naturalized citizen 973 14.6% Not a US citizen 385 39.6%
Ancestry
Ancestry Count % Italian 1,142 17.2% French 1,104 16.6% Arab 352 5.3% Polish 163 2.5% Dutch 118 1.8%
Ancestry Count % Irish 105 1.6% Norwegian 76 1.1% English 29 0.4% German 20 0.3%
Technology access
Metric % of households Computer access 34.1% Internet access 100.0%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 20837
What city is ZIP code 20837 in?
ZIP code 20837 is primarily assigned to Poolesville, Maryland.
What county is ZIP code 20837 in?
ZIP code 20837 falls within Montgomery County, Maryland.
How educated is the population of ZIP code 20837?
63% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
Is ZIP code 20837 mostly owner-occupied?
92% of occupied units in ZIP code 20837 are owner-occupied, well above the national average.
What is the median household income in ZIP code 20837?
The median household income in ZIP code 20837 is $193,264, above the national median of ~$75,000.
What is the typical home value in ZIP code 20837?
The median home value in ZIP code 20837 is $599,900.
What timezone is ZIP code 20837 in?
ZIP code 20837 observes the EST timezone.
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