Madison, MD · standard
ZIP Code 21648
Dorchester County, Maryland - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 255
- 6/sq mi Low-density area
- $195,000
- Median home value Near-median home value
- 13.0%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Madison pairs below-median home values, in a rural, homeowner-dominated area.
- 42nd pct
- home value, US ZIPs
- 6
- people per sq mi
- 91%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 21648 against every reporting US ZIP.
ZIP code 21648 is a sparsely populated ZIP (a standard USPS delivery area) in Madison, Dorchester County, Maryland, home to just 255 residents across 45.5 square miles, a density of 6 people per square mile, in the New York time zone.
Median household income is not on file for ZIP 21648, but per-capita income is $42,655. The poverty rate is 24.4%, so the area-level income figures should not be treated as typical household experience. Home values sit below the statewide ZIP benchmark: the median is $195,000 (56% below the average Maryland ZIP); owner occupancy is 91.4%.
Formal educational attainment runs low here: just 13.0% of adults hold a bachelor's degree or higher, the median age is 61.4, and the average commute is -. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Dorchester County, so 21648 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 →
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 21648, Madison, 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
255
Population
45.5
Area (sq mi)
6
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 21648?
61.4
Median Age
54.7%
Male
45.3%
Female
6.4%
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?
$42,655
Per Capita Income
24.4%
Poverty Rate
0.0%
Unemployment Rate
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
89housing units
89
Total Housing Units
70
Occupied Units
19
Vacant Units
2.29
Avg Household Size
Occupancy Type
$195,000
Median Home Value
-56% vs state ZIP avg
1974
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
Nearby ZIP Codes
Want a side-by-side? Compare 21648 vs 21677 →
ZIP 21648 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 21622
Church Creek (21622)
558 residents
- 21677
Woolford (21677)
440 residents
- 21648
Madison (21648)
255 residents
- 21669
Taylors Island (21669)
229 residents
- 21626 120
Crapo (21626)
120 residents
What this shows Among its immediate neighbors, ZIP 21648 ranks #3 by population - useful context the national average alone can't give.
More ZIP Codes in Dorchester County
Related Areas
Frequently Asked Questions
What county is ZIP code 21648 in?
ZIP code 21648 (Madison) is located in Dorchester County, Maryland. Dorchester County contains multiple ZIP codes, see the full list at /counties/dorchester-md.
What is the population of ZIP code 21648?
ZIP code 21648 in Madison, MD has a population of 255 according to the Census Bureau ACS 2023 estimates.
What is the average home value in ZIP 21648?
The median home value in ZIP 21648 is $195,000, which is 30% below the national average of $278,155.
What is the demographic makeup of ZIP 21648?
The largest racial group in ZIP 21648 is White at 84.3%. Hispanic or Latino residents make up 2.9% of the population.
What is the education level in ZIP code 21648?
In ZIP code 21648, 48.8% of residents aged 25+ have a high school diploma or higher, and 13.0% 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 21648?
In ZIP code 21648, approximately 91.4% of occupied housing units are owner-occupied and 8.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 21648?
The poverty rate in ZIP code 21648 is 24.4% 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 21648's numbers, next.
- See how ZIP 21648 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Madison, 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.