ZIP Code 20837 in Poolesville, MD

Data Last Updated: October 1, 2025
City:Poolesville, Maryland
County:Montgomery County
Timezone:Eastern (GMT -05:00)
Local Time:12:24:46 AM
Population:6,634 [See All]
Area Codes:227 / 240 / 301 / 324 / 369
Classification:Standard [Normal Street Delivery]
Coordinates:39.1165, -77.4150
Land Area:40.284 sq mi
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Population & Demographics


ZIP Code 20837 has 6,634 residents and 2,181 households (average 3.04 persons per household). The median age is 41.8 years, older than the state (38.8) and older than the nation (38.8). The gender split is 48.8% male and 51.2% female, which is about the same as the state male share (48.2%), making this a female-majority area. Largest groups are White (73.2%, much higher than the state average of 48.7% and well above the national average of 61.6%) and Hispanic or Latino (10.0%); Hispanic or Latino residents make up 10.0%, which is much lower than the national average (18.7%).

Explore More: Population Over Time By Age & Gender By Race By Gender Nativity & Citizenship

Source: U.S. Census 2020 Demographics & Housing Characteristics (DHC) and U.S. Census 2011-2023 American Community Survey (ACS) 5-Year Estimates.
2020 Population:6,634Source: Census DHC
2023 ACS Population Estimate:6,605Source: Census ACS
2025 ZC Population Estimate:7,131Source: ZIP-Codes.com
Population Density:164.7 people per sq mile
Average Income:$191,927Source: Census ACS
Households:2,181Source: Census DHC
Average House Value:$701,000Source: Census ACS
Persons Per Household:3.04Source: Census DHC
Average Family Size:2.63Source: Census ACS

Population Over Time (with 2010 & 2020 Census Benchmarks)


Group20102011210220132014201520162017201820192020202120222023
Census ACS Population Estimate--5,6665,6575,8885,9356,0466,2626,3076,2256,2876,1296,6046,6516,605
Decennial Census5,789------------------6,634------
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP05. DEMOGRAPHIC AND HOUSING ESTIMATES

Population by Age & Gender (Total, Male, Female)


Median Age: 41.8

Male Median Age: 40.8

Female Median Age: 43

Group< 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485+
Male148240300270188130142161202252246269268188127572626
Female154245280266168117156180227288257313272161160714138
Total3024855805363562472983414295405035825403492871286764
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Population by Race


White:4,85773.98%
Black:3785.76%
Hispanic:*66410.11%
Asian:4386.67%
American Indian:220.34%
Hawaiian:00%
Other:2063.14%
Total:6,565100%
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)
* NOTE: Hispanic or Latino is an ethnicity, not a race. This means individuals who identify as Hispanic will also be included in one of the race categories (such as White or Black). As a result, the totals shown here may exceed 100% when Hispanic is displayed alongside racial groups.

Gender Breakdown


GenderCount%Median Age
Males:3,24048.84%40.8 years
Females:3,39451.16%43.0 years
Total:6,634100%41.8 years
Source: U.S. Census Bureau (2020) Demographics & Housing Characteristics (DHC)

Nativity & Citizenship


Native, born in the United States:5,52583.65%
Native, born in PR, Island Areas, or abroad:640.97%
Foreign born, naturalized U.S. citizen:4516.83%
Foreign born, not a U.S. citizen:56515.38%
Total Population:6,605100%
Total Native Population:5,58984.62%
Total Foreign-born Population:1,01615.38%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS
Note: Nativity and Citizenship derived from American Community Survey (ACS) 5-year estimates. Total Population listed here will not match official ZIP Code population totals, which are based on the Decennial Census.

Income & Employment


In 2023, the Median household income is $191,927, which is markedly greater than the national median ($78,538), is up $90,260 (88.8%) since 2011 and above its 2019 pre-pandemic level by $24,159. Family households earn a median of $216,089 versus $71,750 for nonfamily households (a difference of $144,339). By gender, male median income is $150,083 and female is $114,556, which is far above the national female median ($53,445), with a current gap of $35,527 that has widened from 2011 to 2023. The labor-force participation rate is 63.2%, which is falls short of the state rate (67.2%). The unemployment rate is 3.9%, which is lower than the national rate (5.2%). The largest occupation group is Management (68.0%).

Explore More: Income Over Time Household Income Employment Status By Occupation

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02, DP03, DP04 and DP05.

Median Income Over Time (Household, Family, Nonfamily, Male, Female)


Income Type2011201220132014201520162017201820192020202120222023
Median Household Income$101,667$107,768$122,663$138,220$145,518$140,833$143,828$157,333$167,768$151,667$179,848$193,264$191,927
Median Family Income$133,609$136,775$137,802$155,461$156,917$152,936$156,800$172,361$181,532$173,851$195,969$215,012$216,089
Median NonFamily Income$45,914$47,336$63,529$72,500$67,200$58,523$59,327$58,021$59,297$38,056$50,333$86,569$71,750
Median Male Income$92,460$90,492$89,138$104,507$103,846$93,333$94,400$101,705$103,182$109,076$115,726$136,932$150,083
Median Female Income$60,613$66,991$62,931$68,015$60,388$58,314$59,549$70,417$73,456$80,417$94,904$112,500$114,556
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Average Household Income


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment Status


Employed:3,22160.05%
Unemployed:1322.46%
Not In Labor Force:2,01137.49%
Total:5,364100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Employment by Occupation (Civilian Employed Population, 16 and Over)


Management, business, science, and arts:2,18967.96%
Service:2969.19%
Sales and Office:3009.31%
Natural resources, construction, and maintenance:2317.17%
Production, transportation, and material moving:2056.36%
Total Civilian Employed Population:3,221100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS.

Housing & Affordability


In 2023, the median home value is $701,000, which is far above the national median ($303,400), is up $215,300 (44.33%) since 2011 and above its 2019 pre-pandemic level by $189,700. The median gross rent is $1,879, which is far above the national median ($1,348), is up $264 (16.35%) since 2011 and below its 2019 pre-pandemic level by $19. Of occupied housing, owners make up 92.54% (81.24% with a mortgage, 18.76% free-and-clear) and renters 7.46% - making this ZIP Code more home ownership than the state and under national rental averages. The vacancy rate is 5.55%, which is markedly below the national rate (10.43%).

Explore More: Compare Home Value Home Value Over Time Rent & Over Time Housing Occupancy

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Table DP03, SELECTED ECONOMIC CHARACTERISTICS.

Median Home Value (Comparison)


Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Home Value Over Time


Group2011210220132014201520162017201820192020202120222023
Median Home Value$485,700$467,500$468,200$475,300$484,600$485,800$499,600$490,200$511,300$541,800$540,100$599,900$701,000
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Gross Rent Paid


Less than $500:00.00%
$500 to $999:00.00%
$1,000 to $1,499:2413.79%
$1,500 to $1,999:6436.78%
$2,000 to $2,499:179.77%
$2,500 to $2,999:00.00%
$3,000 or more:4022.99%
No Rent:2916.67%
Total:174100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Median Gross Rent Over Time


Group2011210220132014201520162017201820192020202120222023
Median Rent$1,615$1,551$1,733$1,592$1,559$1,803$1,769$1,755$1,898$1,884$1,864$1,968$1,879
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP04. SELECTED HOUSING CHARACTERISTICS

Housing Occupancy


Owner Occupied (with mortgage):1,75475.18%
Owner Occupied (free and clear, no mortgage):40517.36%
Renter Occupied:1747.46%
Total Occupied Housing Units:2,333100%

Occupied Housing Units:2,33394.45%
Vacant Housing Units (not graphed):1375.55%
Total Housing Units:2,470100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Housing Type (Single-Family, Multi-Family, Other)


Single-Family Units:2,43098.38%
Multi-Family Units:401.62%
Other Units:00.00%
Total Housing Units:2,470100%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP04. SELECTED HOUSING CHARACTERISTICS

Education, Health & Community


In 2023, 61.10% of adults (25+) have a bachelor's degree or higher, which is far higher than the national rate (35.00%), well above both the state and national averages. High school or higher is 92.50%, which is comparable to the national rate (89.40%). The uninsured rate is 1.40%, which is far lower than the national rate (8.60%). Private coverage is 91.50%, which is well above the national rate (67.30%). Public coverage is 23.30%, which is falls below the national rate (36.30%). The share of people in poverty is 8.50%, which is on par with the state rate (6.30%), up 6.90 percentage points since 2011 and above its 2019 pre-pandemic level by 5.40 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is elementary (38.23%). College enrollment is 28.75%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.

Explore More: Educational Attainment Health Insurance Poverty Over Time School Enrollment

Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. Using data from Tables DP02 and DP03.

Educational Attainment of Adults (25 and Older)


Less than 9th grade:1863.86%
9th to 12th grade, no diploma:1753.64%
High school graduate (includes equivalency):4349.02%
Some college, no degree:73315.23%
Associate's degree:3447.15%
Bachelor's degree:1,54832.16%
Graduate or professional degree:1,39328.94%
Total:4,813100%
High school or higher:4,45292.50%
Bachelor's degree or higher:2,94161.11%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Health Insurance Coverage by Type (Private, Public, Uninsured)


Private Insurance:6,01278.79%
Public Insurance:1,52720.01%
No Insurance:911.19%
Total:7,630100%
Has Health Insurance:7,53998.81%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP03. SELECTED ECONOMIC CHARACTERISTICS

Percentage of People in Poverty Over Time (2011-2023)


Group2011210220132014201520162017201820192020202120222023
% of People in Poverty1.6%1.7%1.0%0.7%1.4%1.5%1.5%1.4%3.1%2.1%1.4%7.1%8.5%
Source: U.S. Census 2011-2023 American Community Survey 5-Year Estimates. DP03. SELECTED ECONOMIC CHARACTERISTICS

Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.

School Enrollment by Education Level (Ages 3 and Older)


Nursery School, Preschool:1438.48%
Kindergarten:754.45%
Elementary school (grades 1-8):64538.23%
High school (grades 9-12):33920.09%
College or graduate school:48528.75%
Total:1,687100%
Early Childhood:21812.92%
K-12 (Primary & Secondary School):1,05962.77%
Source: U.S. Census 2019-2023 American Community Survey 5-Year Estimates. Table DP02. SELECTED SOCIAL CHARACTERISTICS

Business & Employment Statistics


ZIP Code 20837 supports both business and residential activity. According to the Business Census (2023), there are 121 business establishments, employing about 1,084 people with an annual payroll of $53,857,000. USPS data shows 2,346 residential mailboxes and 74 business mailboxes, reflecting local delivery coverage.

# Residential Mailboxes:2,346Source: USPS
# Business Mailboxes:74Source: USPS
Total Delivery Receptacles:2,882Source: USPS
Single Family Delivery Units:1,912Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:121Source: CBP
1st Quarter Payroll:$12,462,000Source: CBP
Annual Payroll:$53,857,000Source: CBP
# of Employees:1,084Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 20837 is located in Montgomery County, Maryland, within the Washington-Arlington-Alexandria, DC-VA-MD-WV Metropolitan Statistical Area (CBSA 47900) and Maryland's 6th and 8th Congressional Districts. This Metro area has a population of 6,263,796 people, about 0.11% of whom live in ZIP Code 20837, and is subdivided into the Frederick-Gaithersburg-Bethesda, MD division. It covers 40.284 sq mi of land and a water area of 3.056 sq mi.

CBSA Name:Washington-Arlington-Alexandria, DC-VA-MD-WVSource: Census
CBSA Number:47900Source: Census
CBSA Type:MetroSource: Census
CBSA Division:Frederick-Gaithersburg-Bethesda, MD (CBSA Div 23224)Source: Census
CBSA Population:6,263,796Source: Census
MSA:Washington-Baltimore, DC-MD-VA-WV CMSASource: Census
Land Area:40.284 sq miSource: Census
Water Area:3.056 sq miSource: Census
Congressional District:06,08Source: USPS
Congressional Land Area:1950.26, 859.85 sq miSource: Census
PMSA:Washington, DC-MD-VA-WV PMSASource: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:2462850Source: Census
Place Name:Poolesville town; MarylandSource: Census

Adjacent & Nearby ZIP Codes


20838 | | 20833

Schools in ZIP Code 20837


ZIP Code 20837 is in the Montgomery County Public Schools, which serves grades Pre-Kindergarten thru 12th. There are 3 public school(s) in this ZIP Code, and we have located 3 private school(s). It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

John H. Poole Middle 17014 Tom Fox Ave
Poolesville, MD 20837
District: Montgomery County Public Schools
Poolesville Elementary 19565 Fisher Ave
Poolesville, MD 20837
District: Montgomery County Public Schools
Poolesville High 17501 W Willard Rd
Poolesville, MD 20837
District: Montgomery County Public Schools
Seneca Academy 15601 Germantown Rd
Darnestown, MD 20874
District: Private SchoolNearby
Mary Of Nazareth School 14131 Seneca Rd
Darnestown, MD 20874
District: Private SchoolNearby
Butler Montessori 15951 Germantown Rd
Germantown, MD 20874
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 20837


Strayer University-Loudoun Campus 45150 Russell Branch Pky Ste 200
Ashburn, VA 20147
Type: Post Secondary
Divine Mercy University 45154 Underwood Lane
Sterling, VA 20166
Type: Post Secondary
Jolie Hair Academy 10134 Colvin Run Road
Great Falls, VA 22066-1841
Type: Post Secondary
Avi Career Training 10130-A Colvin Run Rd
Great Falls, VA 22066
Type: Post Secondary
Dermal Science International Aesthetics And Nail Academy 11425 Isaac Newton Square, Suite 200
Reston, VA 20190
Type: Post Secondary
Strayer University-Rockville Campus 1803 Research Boulevard Suit 110
Rockville, MD 20850
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on October 1, 2025.

  1. U.S. Postal Service [Last Updated: 10/1/2025], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 10/1/2025], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2023 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 10/1/2025], https://nces.ed.gov