PlainZIP

Keedysville, MD · standard

ZIP Code 21756

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

3,612
67/sq mi
$101,786
Median income
$413,200
Median home value
28.8%
Bachelor's or higher

The verdict

Keedysville pairs an upper-quartile household income with upper-quartile home values, in a rural, homeowner-dominated area.

Top 18%
household income, US ZIPs
Top 19%
home value, US ZIPs
67
people per sq mi
98%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21756 against every reporting US ZIP.

ZIP code 21756 is classified by USPS as a standard delivery area and covers roughly 54.2 square miles in Keedysville, Washington County, Maryland. The area is home to 3,612 residents, producing a population density of 67 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 21756 against Maryland and the nation.

On the economic side, the median household income for ZIP 21756 sits at $101,786 (11% below the Maryland average), while per-capita income is $48,757. The poverty rate stands at 2.9% and the unemployment rate at 3.6%. On housing, the median home value is $413,200 (8% below the state average) with median rent at $1,321 per month, and 97.7% of occupied units are owner-occupied, a direct signal of whether 21756 behaves more like a homeowner neighborhood or a renter-heavy ZIP.

Education and household profile round out the picture: 28.8% of adults hold a bachelor's degree or higher, the median age is 41.8, and the average commute is —. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Washington County, so you can benchmark 21756 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 21756

Top 5 sectors by establishment count

Which industries have the most business establishments in ZIP 21756.

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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, FHFA HPI for ZIP 21756, Keedysville, 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

3,612

Population

54.2

Area (sq mi)

67

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 21756?

41.8

Median Age

52.2%

Male

47.8%

Female

2.2%

Foreign-Born

White 94.8%
African American 0.0%
Asian 0.5%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.4%
Hispanic or Latino 0.4%

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?

$101,786

Median Household Income

-11% vs state

$48,757

Per Capita Income

2.9%

Poverty Rate

3.6%

Unemployment Rate

How ZIP 21756 ranks nationally

Household income vs. every US ZIP code

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

$101,786 Top 18% higher than 82% 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%). This entry sits in this band. $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 72.4%
Bachelor's Degree or Higher 28.8%

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

What does housing look like?

1,496

Total Housing Units

1,394

Occupied Units

102

Vacant Units

2.61

Avg Household Size

Occupancy Type

Owner 97.7%
Renter 2.3%

$413,200

Median Home Value

-8% vs state

$1,321

Median Rent

1991

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

+11.4%

YoY Change (2024)

259

HPI Index (2000 = 100)

+159%

Total Change Since 2000

Home values in ZIP 21756 have increased 11.4% over the past year (2024). Since 2000, this ZIP has seen +159% cumulative appreciation.

Year Annual Change HPI Index
2020 +1.4% 166
2021 +13.3% 189
2022 +18.8% 224
2023 +3.7% 232
2024 +11.4% 259

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 48 business establishments in ZIP 21756, employing approximately 161 people with a combined annual payroll of $8,767,000.

48

Businesses

161

Employees

$8.8M

Annual Payroll

7

Industry Sectors

Industry Establishments % of Total
Construction 14 29.2%
Transportation and warehousing 6 12.5%
Manufacturing 4 8.3%
Professional, scientific, and technical services 4 8.3%
Other services (except public administration) 4 8.3%
Administrative and support and waste management and remediation services 3 6.3%
Health care and social assistance 3 6.3%

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 21756 vs 21782 →

ZIP 21756 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 21756 ranks #6 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 21756 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 21756 ranks #5 of 8 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
21782 Sharpsburg, MD 4,097 3.3 mi
21779 Rohrersville, MD 983 3.1 mi
21713 Boonsboro, MD 9,502 5.3 mi
21746 Hagerstown, MD 1,883 7.8 mi
25443 Shepherdstown, WV 7,445 6.2 mi
21718 Burkittsville, MD 151 5.7 mi
21758 Knoxville, MD 4,921 7.4 mi
21769 Middletown, MD 11,236 7.2 mi
21733 Fairplay, MD 1,163 7.4 mi
21781 Saint James, MD 136 8.8 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 Keedysville, MD Maryland

Frequently Asked Questions

What county is ZIP code 21756 in? ▼
ZIP code 21756 (Keedysville) 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 21756? ▼
ZIP code 21756 in Keedysville, MD has a population of 3,612 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 21756? ▼
The median household income in ZIP 21756 is $101,786, which is 33% above the national average of $76,288.
What is the average home value in ZIP 21756? ▼
The median home value in ZIP 21756 is $413,200, which is 49% above the national average of $278,155.
What is the demographic makeup of ZIP 21756? ▼
The largest racial group in ZIP 21756 is White at 94.8%. Hispanic or Latino residents make up 0.4% of the population.
How many businesses are in ZIP code 21756? ▼
ZIP code 21756 has 48 business establishments employing approximately 161 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 21756? ▼
The top industries by establishment count in ZIP 21756 are: Construction (14), Transportation and warehousing (6), Manufacturing (4). There are 7 industry sectors represented in total.
How have home values changed in ZIP code 21756? ▼
According to the FHFA House Price Index, home values in ZIP 21756 increased by 11.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 159%. 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 21756? ▼
In ZIP code 21756, 72.4% of residents aged 25+ have a high school diploma or higher, and 28.8% 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 21756? ▼
In ZIP code 21756, approximately 97.7% of occupied housing units are owner-occupied and 2.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21756? ▼
The poverty rate in ZIP code 21756 is 2.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

ZIP Code Research Guides

Reading Census Demographics
How to interpret population, income, and education data from the Census Bureau.
Understanding ZIP Code Data
What ZIP codes are, how ZCTAs differ, and what the data reveals.
Best ZIP Codes for Families
Key factors to evaluate when choosing a family-friendly neighborhood.
ZIP Codes for Relocation
Data-driven tips for evaluating ZIP codes before a move.

Official Data Resources for Keedysville, MD

Verify and explore additional data for this area using these official government sources.

U.S. Census Bureau
Official demographic, economic, and housing data from the American Community Survey.
HUD Fair Market Rents
Department of Housing and Urban Development rental cost estimates by metropolitan area.
FBI Uniform Crime Reports
Official crime statistics compiled from law enforcement agencies nationwide.
FHFA House Price Index
Federal Housing Finance Agency home value trends based on repeat sales and appraisals.

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