Madison, MD 21648 ZIP Code Profile

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Madison, MD

ZIP Code 21648: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Madison, MD 21648

  • ZIP Code Type: STANDARD
  • County: Dorchester County
  • Centroid: Latitude 38.502, Longitude -76.229
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 2
  • PO Box Addresses: 3
  • Residential Addresses: 101
    • Multi-Family Addresses: 0
    • Single Family Addresses: 101

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2018, Maps updated: August 1, 2018.

Jump to... (On This Page!)
  1. 21648 2018 Demographic Data
  2. Growth Rates for 21648 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Maryland Research Tools (Easy Tools & Current Data)
  3. Maryland Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Madison, MD 21648 Data & Demographics (As of July 1, 2018)


Total Population 232
Population in Households 227
Population in Familes 184
Population in Group Qrtrs 5
Population Density2 18
Diversity Index3 26


Median Household Income $62,040
Average Household Income $85,219
Per Capita Income $33,854


Total Housing Units 123 (100%)
Owner Occupied HU 75 (61.0%)
Renter Occupied HU 15 (12.2%)
Vacant Housing Units 33 (26.8%)
Median Home Value $297,500
Average Home Value $318,000


Total Households 90
Average Household Size 2.52
Family Households 62
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2018 2018-2023
Population 0.26% -0.17%
Households 0.14% 0.0%
Families 0.0% -0.32%
Median Household Income   3.03%
Per Capita Income   3.26%

Madison, MD 21648 - Peer Comparisons by Rank and Percentile

The table below compares 21648 to the other 448 ZIP Codes in Maryland by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 421 6th
Population Density # 434 3rd
Diversity Index # 327 27th
Median Household Income # 318 29th
Per Capita Income # 271 40th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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