Grasonville, MD 21638 ZIP Code Profile

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Grasonville, MD

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ZIP Code 21638: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Grasonville, MD 21638

  • ZIP Code Type: STANDARD
  • County: Queen Annes County
  • Centroid: Latitude 38.94, Longitude -76.189
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 168
  • PO Box Addresses: 173
  • Residential Addresses: 2,064
    • Multi-Family Addresses: 121
    • Single Family Addresses: 1,943

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

EXTREMELY LOCAL Demographic Data

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21638 ZIP Code Map

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Grasonville, MD 21638 Data & Demographics (As of July 1, 2017)


Total Population 4,998
Daytime Population: Workers 1,927
Daytime Population: Residents 2,225
Total Daytime Population (TDP) 4,152
Ratio TDP/Total Population1 0.83
Population in Households 4,984
Population in Familes 4,127
Population in Group Qrtrs 14
Population Density2 508
Diversity Index3 43


Median Household Income $90,208
Average Household Income $117,705
Per Capita Income $44,544


Total Housing Units 2,221 (100%)
Owner Occupied HU 1,486 (66.9%)
Renter Occupied HU 401 (18.1%)
Vacant Housing Units 334 (15.0%)
Median Home Value $397,196
Average Home Value $465,124


Total Households 1,887
Average Household Size 2.64
Family Households 1,339
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  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.


2010-2017 2017-2022
Population 0.82% 0.77%
Households 0.61% 0.68%
Families 0.48% 0.61%
Median Household Income   2.54%
Per Capita Income   2.77%

Grasonville, MD 21638 - Peer Comparisons by Rank and Percentile

The table below compares 21638 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 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 # 239 48th
Population Density # 203 56th
Diversity Index # 204 55th
Median Household Income # 164 64th
Per Capita Income # 120 74th

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

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