Zip Code 20871
Clarksburg, Maryland — Montgomery County
📍 ZIP code 20871 is in Clarksburg, Montgomery County, Maryland.
ZIP code 20871 is located in Clarksburg, Montgomery County, Maryland. It is a zip code in the Eastern (EST/EDT) Time Zone with an estimated population of 28,329. The area code for ZIP code 20871 is 301.
Quick Answer
Zip code 20871 is in Clarksburg, Maryland (Montgomery County). It has a population of 28,329, median household income of $177,120, and median home value of $628,800.
Population
28,329
Income
$177,120
Home Value
$628,800
Climate
84°F / 25°F
About Zip Code 20871
Zip code 20871 is located in Clarksburg, Maryland, within Montgomery County. Home to approximately 28,329 residents, this area sits at an elevation of 509 ft and falls within the Eastern (EST/EDT) timezone. The local area code is 301.
The median household income is $177,120 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $628,800, and the cost of living index is 214 (114% above the national average of 100).
Summers average a high of 84°F while winters drop to 25°F. The area receives about 48 in of rain and 31 in of snow annually. The zip code covers 20.5 square miles of land area.
Key Statistics
28,329
$177,120
$628,800
Eastern (EST/EDT)
301
509 ft
20.5 sq mi
37.9
8,915
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Compare With Nearby Zip Codes
| Metric | 20871 | 20872 | 20876 | 21754 | 20841 | 21770 |
|---|---|---|---|---|---|---|
| City | Clarksburg, MD | Damascus, MD | Germantown, MD | New Market, MD | Boyds, MD | Monrovia, MD |
| Population | 28,329 | 13,138 | 26,511 | 7,439 | 9,706 | 7,815 |
| Median Income | $177,120 | $132,804 | $113,329 | $179,797 | $184,276 | $184,464 |
| Home Value | $628,800 | $478,300 | $456,500 | $619,700 | $771,400 | $599,700 |
| Cost of Living | 214 | 168 | 154 | 224 | 237 | 216 |
| Median Age | 37.9 | 41.2 | 36.8 | 41.3 | 48 | 41.2 |
Cost of Living
100 = National Average. Clarksburg's cost of living is 114% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
3.6x
Demographics
Zip code 20871 has a population of 28,329 people with a median age of 37.9. There are 8,915 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Clarksburg (20871) population trend from 2010 to 2024
↑ 15.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
84°F
25°F
48 in
31 in
Clarksburg experiences warm summers with average highs around 84°F. Winters are cool with lows averaging 25°F. With 31 in of annual snowfall, residents should be prepared for significant winter weather.
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Housing & Economy
Median Home Value
$628,800
Median Household Income
$177,120
With 8,915 housing units across 20.5 square miles, 20871 has a housing density of 435 units per square mile. The home price-to-income ratio is 3.6x.
Location & Geography
Latitude
39.2613°
Longitude
-77.2825°
Land Area
20.5 sq mi
Water Area
0 sq mi
Nearby Zip Codes
Zip codes closest to 20871 (Clarksburg, MD) with distances:
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ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 20871's $177,120. A way to compare Clarksburg to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 20871 (Clarksburg, MD). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Clarksburg, Maryland?
Clarksburg, Maryland uses zip code 20871.
What county is zip code 20871 in?
Zip code 20871 is located in Montgomery County, Maryland.
What is the population of zip code 20871?
The population of zip code 20871 is 28,329 with a median age of 37.9.
Is 20871 in Clarksburg, Maryland?
Yes, zip code 20871 is in Clarksburg, Montgomery County, Maryland. The area code is 301.
Frequently Asked Questions
What city is zip code 20871 in?
Zip code 20871 is in Clarksburg, Maryland. It is part of Montgomery County and uses the Eastern (EST/EDT) timezone.
What is zip code 20871?
Zip code 20871 is a U.S. postal code in Clarksburg, Maryland (Montgomery County). It has a population of 28,329 and covers 20.5 square miles.
What is the population of zip code 20871?
The population of zip code 20871 (Clarksburg, MD) is 28,329 with a median age of 37.9. There are approximately 8,915 housing units in this area.
What is the median income in zip code 20871?
The median household income in zip code 20871 (Clarksburg, MD) is $177,120 per year. The cost of living index is 214 (100 = national average).
What is the average home price in zip code 20871?
The median home value in zip code 20871 (Clarksburg, MD) is $628,800. The cost of living index is 214 compared to the national average of 100.
What county is zip code 20871 in?
Zip code 20871 is located in Montgomery County, Maryland. The primary city is Clarksburg.
What is the area code for zip code 20871?
Zip code 20871 in Clarksburg, MD uses area code 301. It is located in the Eastern (EST/EDT) timezone.
Is zip code 20871 a good place to live?
Zip code 20871 (Clarksburg, MD) has a cost of living index of 214 (100 = national average), a median household income of $177,120, and median home values of $628,800. The median age is 37.9. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 20871?
The cost of living index for zip code 20871 (Clarksburg, MD) is 214, where 100 represents the national average. This area is above the national average. Median home value: $628,800.
What schools serve zip code 20871?
Zip code 20871 in Clarksburg, Maryland is served by the local school district of Montgomery County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.