Clarksburg, MD · standard
ZIP Code 20871
Montgomery County, Maryland — Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 13,130
- 247/sq mi
- $177,523
- Median income
- $668,800
- Median home value
- 68.1%
- Bachelor's or higher
The verdict
Clarksburg pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.
- Top 2%
- household income, US ZIPs
- Top 7%
- home value, US ZIPs
- 247
- people per sq mi
- 91%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 20871 against every reporting US ZIP.
ZIP code 20871 is classified by USPS as a standard delivery area and covers roughly 53.2 square miles in Clarksburg, Montgomery County, Maryland. The area is home to 13,130 residents, producing a population density of 247 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 20871 against Maryland and the nation.
On the economic side, the median household income for ZIP 20871 sits at $177,523 (56% above the Maryland average), while per-capita income is $59,923. The poverty rate stands at 3.8% and the unemployment rate at 4.3%. On housing, the median home value is $668,800 (49% above the state average) with median rent at $2,560 per month, and 90.6% of occupied units are owner-occupied, a direct signal of whether 20871 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 68.1% of adults hold a bachelor's degree or higher, the median age is 37.7, and the average commute is 35 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Montgomery County, so you can benchmark 20871 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 20871
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 20871.
- Professional, scientific, and technical services
Professional, scientific, and technical services
207 establishments
- Retail trade 80
Retail trade
80 establishments
- Construction 50
Construction
50 establishments
- Health care and social assistance 42
Health care and social assistance
42 establishments
- Administrative and support and waste management and remediation services 32
Administrative and support and waste management and remediation services
32 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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 20871, Clarksburg, MD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; HUD FMR + FHFA HPI updated quarterly/annually.
Quick Facts
13,130
Population
53.2
Area (sq mi)
247
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 20871?
37.7
Median Age
48.7%
Male
51.3%
Female
39.1%
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?
$177,523
Median Household Income
+56% vs state
$59,923
Per Capita Income
3.8%
Poverty Rate
4.3%
Unemployment Rate
34.8 min
Mean Commute Time
How ZIP 20871 ranks nationally
Household income vs. every US ZIP code
Median household income — the full national distribution, with this ZIP marked
$177,523 Top 2% higher than 98% of 30,318 US ZIPs
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
9,405
Total Housing Units
9,347
Occupied Units
58
Vacant Units
3.22
Avg Household Size
Occupancy Type
$668,800
Median Home Value
+49% vs state
$2,560
Median Rent
2010
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
+0.4%
YoY Change (2024)
261
HPI Index (2000 = 100)
+161%
Total Change Since 2000
Home values in ZIP 20871 have increased 0.4% over the past year (2024). Since 2000, this ZIP has seen +161% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.4% | 191 |
| 2021 | +10.9% | 211 |
| 2022 | +11.5% | 236 |
| 2023 | +10.3% | 260 |
| 2024 | +0.4% | 261 |
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 544 business establishments in ZIP 20871, employing approximately 4,656 people with a combined annual payroll of $326,872,000.
544
Businesses
4,656
Employees
$326.9M
Annual Payroll
15
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Professional, scientific, and technical services | 207 | 38.0% |
| Retail trade | 80 | 14.7% |
| Construction | 50 | 9.2% |
| Health care and social assistance | 42 | 7.7% |
| Administrative and support and waste management and remediation services | 32 | 5.9% |
| Real estate and rental and leasing | 30 | 5.5% |
| Accommodation and food services | 20 | 3.7% |
| Other services (except public administration) | 20 | 3.7% |
| Finance and insurance | 14 | 2.6% |
| Transportation and warehousing | 11 | 2.0% |
| Arts, entertainment, and recreation | 10 | 1.8% |
| Information | 8 | 1.5% |
| Wholesale trade | 7 | 1.3% |
| Manufacturing | 6 | 1.1% |
| Educational services | 5 | 0.9% |
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 20871 vs 20872 →
ZIP 20871 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
- 20886
Montgomery Village (20886)
33,282 residents
- 20876
Germantown (20876)
25,496 residents
- 20882 14,063
Gaithersburg (20882)
14,063 residents
- 20871 13,130
Clarksburg (20871)
13,130 residents
- 20872 13,104
Damascus (20872)
13,104 residents
- 21774 11,662
New Market (21774)
11,662 residents
- 20841 10,460
Boyds (20841)
10,460 residents
- 21754 6,323
Ijamsville (21754)
6,323 residents
What this shows Among its immediate neighbors, ZIP 20871 ranks #5 by population — useful context the national average alone can't give.
ZIP 20871 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)
$250,001 median income
- 20841
Boyds (20841)
$184,688 median income
- 20882
Gaithersburg (20882)
$184,136 median income
- 21770
Monrovia (21770)
$183,571 median income
- 21754
Ijamsville (21754)
$182,188 median income
- 20871
Clarksburg (20871)
$177,523 median income
- 21774
New Market (21774)
$171,103 median income
- 20872
Damascus (20872)
$141,050 median income
- 20876
Germantown (20876)
$119,731 median income
What this shows By household income, ZIP 20871 ranks #6 of 9 neighboring ZIPs — local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 20872 | Damascus, MD | 13,104 | 4.1 mi |
| 21754 | Ijamsville, MD | 6,323 | 5.3 mi |
| 20876 | Germantown, MD | 25,496 | 4.5 mi |
| 20841 | Boyds, MD | 10,460 | 5.3 mi |
| 21770 | Monrovia, MD | 5,164 | 6.4 mi |
| 20838 | Barnesville, MD | 259 | 5.3 mi |
| 20874 | Germantown, MD | 57,367 | 9.1 mi |
| 21774 | New Market, MD | 11,662 | 10.3 mi |
| 20882 | Gaithersburg, MD | 14,063 | 7.6 mi |
| 20886 | Montgomery Village, MD | 33,282 | 7.4 mi |
More ZIP Codes in Montgomery County
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Frequently Asked Questions
What county is ZIP code 20871 in? ▼
What is the population of ZIP code 20871? ▼
What is the median household income in ZIP 20871? ▼
What is the average home value in ZIP 20871? ▼
What is the demographic makeup of ZIP 20871? ▼
How many businesses are in ZIP code 20871? ▼
What are the main industries in ZIP code 20871? ▼
How have home values changed in ZIP code 20871? ▼
What is the education level in ZIP code 20871? ▼
What is the average commute time in ZIP 20871? ▼
What percentage of residents own vs. rent in ZIP 20871? ▼
What is the poverty rate in ZIP code 20871? ▼
ZIP Code Research Guides
Official Data Resources for Clarksburg, MD
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.