PlainZIP

Big Pool, MD · standard

ZIP Code 21711

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

1,029
17/sq mi
$91,250
Median income
$310,600
Median home value
20.2%
Bachelor's or higher

The verdict

Big Pool pairs an above-median household income with above-median home values, in a rural, homeowner-dominated area.

Top 26%
household income, US ZIPs
Top 32%
home value, US ZIPs
17
people per sq mi
100%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21711 against every reporting US ZIP.

ZIP code 21711 is a sparsely populated ZIP (a standard USPS delivery area) in Big Pool, Washington County, Maryland, home to just 1,029 residents across 61.6 square miles, a density of 17 people per square mile, in the New York time zone.

ZIP 21711 lands in the middle-income range, with a median household income of $91,250 (20% below the Maryland average), while per-capita income is $45,819. 11.2% of residents live below the poverty line, and the unemployment rate reads 5.5%. On housing, the median home value is $310,600 (31% below the state average) with median rent at - per month, and 100.0% of occupied units are owner-occupied.

Educational attainment sits below the national norm: 20.2% of adults hold a bachelor's degree or higher, the median age is 52.3, and the average commute is -. To put 21711 in local context, 5 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Washington 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 →

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 21711, Big Pool, 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

1,029

Population

61.6

Area (sq mi)

17

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 21711?

52.3

Median Age

48.4%

Male

51.6%

Female

0.0%

Foreign-Born

White 100.0%
African American 0.0%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 0.0%
Hispanic or Latino 0.0%

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?

$91,250

Median Household Income

-20% vs state

$45,819

Per Capita Income

11.2%

Poverty Rate

5.5%

Unemployment Rate

How ZIP 21711 ranks nationally

Big Pool, MD household income vs. every US ZIP code

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

$91,250 Top 26% higher than 74% 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%). This entry sits in this band. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $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 63.6%
Bachelor's Degree or Higher 20.2%

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

What does housing look like?

448

Total Housing Units

434

Occupied Units

14

Vacant Units

2.14

Avg Household Size

Occupancy Type

Owner 100.0%
Renter 0.0%

$310,600

Median Home Value

-31% vs state

1974

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 16 business establishments in ZIP 21711, employing approximately 145 people with a combined annual payroll of $7,335,000.

16

Businesses

145

Employees

$7.3M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Construction 7 43.8%

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 21711 vs 21722 →

ZIP 21711 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 21711 ranks #5 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 21711 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 21711 ranks the highest of 6 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
21722 Clear Spring, MD 5,545 5.3 mi
17212 Big Cove Tannery, PA 702 10.4 mi
17236 Mercersburg, PA 8,895 9.8 mi
25419 Falling Waters, WV 9,251 9.1 mi
25427 Hedgesville, WV 14,322 10.8 mi

More ZIP Codes in Washington County

21740 standard
Hagerstown, MD
Pop: 61,859
21742 standard
Hagerstown, MD
Pop: 31,444
21713 standard
Boonsboro, MD
Pop: 9,502
21795 standard
Williamsport, MD
Pop: 9,233
21783 standard
Smithsburg, MD
Pop: 9,130
21722 standard
Clear Spring, MD
Pop: 5,545

Related Areas

Washington County Big Pool, MD Maryland

Frequently Asked Questions

What county is ZIP code 21711 in? ▼
ZIP code 21711 (Big Pool) is located in Washington County, Maryland. Washington County contains multiple ZIP codes, see the full list at /counties/washington-md.
What is the population of ZIP code 21711? ▼
ZIP code 21711 in Big Pool, MD has a population of 1,029 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21711? ▼
The median household income in ZIP 21711 is $91,250, which is 20% above the national average of $76,288.
What is the average home value in ZIP 21711? ▼
The median home value in ZIP 21711 is $310,600, which is 12% above the national average of $278,155.
What is the demographic makeup of ZIP 21711? ▼
The largest racial group in ZIP 21711 is White at 100.0%.
How many businesses are in ZIP code 21711? ▼
ZIP code 21711 has 16 business establishments employing approximately 145 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 21711? ▼
In ZIP code 21711, 63.6% of residents aged 25+ have a high school diploma or higher, and 20.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the poverty rate in ZIP code 21711? ▼
The poverty rate in ZIP code 21711 is 11.2% 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.