PlainZIP

Poolesville, MD · standard

ZIP Code 20837

Montgomery County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

5,789
53/sq mi
$174,063
Median income
$772,300
Median home value
57.1%
Bachelor's or higher

The verdict

Poolesville pairs a top-decile household income with top-decile home values, in a rural, homeowner-dominated area.

Top 2%
household income, US ZIPs
Top 5%
home value, US ZIPs
53
people per sq mi
92%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20837 against every reporting US ZIP.

ZIP code 20837 is a mid-sized community (a standard USPS delivery area) in Poolesville, Montgomery County, Maryland, home to 5,789 residents across 110.3 square miles, a density of 53 people per square mile, in the New York time zone.

ZIP 20837 skews affluent, with a median household income of $174,063 (53% above the Maryland average), while per-capita income is $71,211. Local economic indicators show a 8.7% poverty rate alongside 3.5% unemployment. Median home value sits at $772,300 (73% above the state average), median rent at $1,996 a month, and owner-occupancy at 91.9%.

This is a highly-educated ZIP: 57.1% of adults hold a bachelor's degree or higher, the median age is 45.9, and the average commute is -. To put 20837 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Montgomery County, for a geography-aware comparison.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 20837

Top 5 sectors by establishment count in Poolesville, MD

Which industries have the most business establishments in ZIP 20837.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 20837, Poolesville, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

5,789

Population

110.3

Area (sq mi)

53

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 20837?

45.9

Median Age

46.4%

Male

53.6%

Female

14.2%

Foreign-Born

White 71.7%
African American 2.7%
Asian 6.9%
American Indian or Alaska Native 0.7%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 12.5%
Hispanic or Latino 13.1%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$174,063

Median Household Income

+53% vs state

$71,211

Per Capita Income

8.7%

Poverty Rate

3.5%

Unemployment Rate

How ZIP 20837 ranks nationally

Poolesville, MD household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$174,063 Top 2% higher than 98% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). This entry sits in this band. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 68.6%
Bachelor's Degree or Higher 57.1%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

2,422

Total Housing Units

2,366

Occupied Units

56

Vacant Units

2.83

Avg Household Size

Occupancy Type

Owner 91.9%
Renter 8.1%

$772,300

Median Home Value

+73% vs state

$1,996

Median Rent

1989

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+9.2%

YoY Change (2024)

274

HPI Index (2000 = 100)

+174%

Total Change Since 2000

Home values in ZIP 20837 have increased 9.2% over the past year (2024). Since 2000, this ZIP has seen +174% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.5% 191
2021 +10.0% 210
2022 +11.0% 234
2023 +7.3% 251
2024 +9.2% 274

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 121 business establishments in ZIP 20837, employing approximately 1,084 people with a combined annual payroll of $53,857,000.

121

Businesses

1,084

Employees

$53.9M

Annual Payroll

13

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 26 21.5%
Construction 17 14.1%
Other services (except public administration) 12 9.9%
Retail trade 11 9.1%
Administrative and support and waste management and remediation services 10 8.3%
Health care and social assistance 10 8.3%
Accommodation and food services 8 6.6%
Information 5 4.1%
Real estate and rental and leasing 5 4.1%
Wholesale trade 3 2.5%
Transportation and warehousing 3 2.5%
Finance and insurance 3 2.5%
Arts, entertainment, and recreation 3 2.5%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 20837 vs 20165 →

ZIP 20837 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 20837 ranks #8 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 20837 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 20837 ranks #5 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
20165 Sterling, VA 32,383 4.4 mi
20839 Beallsville, MD 214 5.0 mi
20164 Sterling, VA 37,747 6.9 mi
20842 Dickerson, MD 1,824 6.9 mi
20874 Germantown, MD 57,367 6.0 mi
20147 Ashburn, VA 54,086 6.3 mi
20838 Barnesville, MD 259 8.1 mi
20170 Herndon, VA 41,236 9.2 mi
20841 Boyds, MD 10,460 7.0 mi
20166 Sterling, VA 9,521 9.1 mi

More ZIP Codes in Montgomery County

20906 standard
Silver Spring, MD
Pop: 64,696
20878 standard
Gaithersburg, MD
Pop: 62,446
20874 standard
Germantown, MD
Pop: 57,367
20904 standard
Silver Spring, MD
Pop: 54,612
20854 standard
Potomac, MD
Pop: 49,611
20902 standard
Silver Spring, MD
Pop: 48,841

Related Areas

Montgomery County Poolesville, MD Maryland

Frequently Asked Questions

What county is ZIP code 20837 in? ▼
ZIP code 20837 (Poolesville) is located in Montgomery County, Maryland. Montgomery County contains multiple ZIP codes, see the full list at /counties/montgomery-md.
What is the population of ZIP code 20837? ▼
ZIP code 20837 in Poolesville, MD has a population of 5,789 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 20837? ▼
The median household income in ZIP 20837 is $174,063, which is 128% above the national average of $76,288.
What is the average home value in ZIP 20837? ▼
The median home value in ZIP 20837 is $772,300, which is 178% above the national average of $278,155.
What is the demographic makeup of ZIP 20837? ▼
The largest racial group in ZIP 20837 is White at 71.7%. Hispanic or Latino residents make up 13.1% of the population.
How many businesses are in ZIP code 20837? ▼
ZIP code 20837 has 121 business establishments employing approximately 1,084 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 20837? ▼
The top industries by establishment count in ZIP 20837 are: Professional, scientific, and technical services (26), Construction (17), Other services (except public administration) (12). There are 13 industry sectors represented in total.
How have home values changed in ZIP code 20837? ▼
According to the FHFA House Price Index, home values in ZIP 20837 increased by 9.2% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 174%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 20837? ▼
In ZIP code 20837, 68.6% of residents aged 25+ have a high school diploma or higher, and 57.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 20837? ▼
In ZIP code 20837, approximately 91.9% of occupied housing units are owner-occupied and 8.1% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 20837? ▼
The poverty rate in ZIP code 20837 is 8.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.