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 Moderate-density area
- $174,063
- Median income Above-median income area
- $772,300
- Median home value Above-median home value
- 57.1%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 20837 (Poolesville, MD) rose +9.2% from 2023 to 2024. The all-transactions index moved from 250.7 in 2023 to 273.7 in 2024 (2000 = 100).
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 average Maryland ZIP), while per-capita income is $71,211. The poverty rate is 8.7%, with unemployment at 3.5%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $772,300 (73% above the average Maryland ZIP), while 91.9% of occupied homes are owner-occupied and median rent is $1,996.
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 -. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Montgomery County, so 20837 can be compared with both its immediate and county-level context.
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.
- Professional, scientific, and technical services
Professional, scientific, and technical services
26 establishments
- Construction
Construction
17 establishments
- Other services (except public administration)
Other services (except public administration)
12 establishments
- Retail trade
Retail trade
11 establishments
- Administrative and support and waste management and remediation services 10
Administrative and support and waste management and remediation services
10 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, 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
Who lives in ZIP 20837?
45.9
Median Age
46.4%
Male
53.6%
Female
14.2%
Foreign-Born
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 ZIP avg
$71,211
Per Capita Income
8.7%
Poverty Rate
3.5%
Unemployment Rate
How ZIP 20837 ranks among Maryland ZIPs
Poolesville, MD household income vs. every Maryland ZIP code
Median household income among 419 reporting Maryland ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$174,063 Top 10% higher than 90% of 419 Maryland ZIPs
Each bar is a $20K-wide band; taller bars hold more Maryland 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
2,422housing units
2,422
Total Housing Units
2,366
Occupied Units
56
Vacant Units
2.83
Avg Household Size
Occupancy Type
$772,300
Median Home Value
+73% vs state ZIP avg
$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.
- 20874
Germantown (20874)
57,367 residents
- 20147
Ashburn (20147)
54,086 residents
- 20170
Herndon (20170)
41,236 residents
- 20164
Sterling (20164)
37,747 residents
- 20165
Sterling (20165)
32,383 residents
- 20841 10,460
Boyds (20841)
10,460 residents
- 20166 9,521
Sterling (20166)
9,521 residents
- 20837 5,789
Poolesville (20837)
5,789 residents
- 20842 1,824
Dickerson (20842)
1,824 residents
What this shows Among its immediate neighbors, ZIP 20837 ranks #8 by population - useful context the national average alone can't give.
ZIP 20837 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 20838
Barnesville (20838)
$250,000 median income
- 20842
Dickerson (20842)
$204,013 median income
- 20841
Boyds (20841)
$184,688 median income
- 20165
Sterling (20165)
$183,076 median income
- 20837
Poolesville (20837)
$174,063 median income
- 20147
Ashburn (20147)
$163,904 median income
- 20839
Beallsville (20839)
$160,329 median income
- 20170
Herndon (20170)
$159,466 median income
- 20164
Sterling (20164)
$135,660 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 20837, both outside MD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (5,789 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Montgomery County
Related Areas
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.
Related
Take this with you
What to do with ZIP 20837's numbers, next.
- See how ZIP 20837 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Poolesville, MD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.