Rohrersville, MD 21779 ZIP Code Profile

Related Place Profiles:
Gapland, MD | Rohrersville, MD

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ZIP Code 21779: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Rohrersville, MD 21779

Acceptable Alternative
Gapland, MD 21779

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 21
  • Single Family Addresses: 352
  • Multi-Family Addresses: 0
  • County: Washington County
  • Centroid: Latitude 39.438, Longitude -77.659
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


21779 ZIP Code Map

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Rohrersville, MD 21779 Data & Demographics (As of July 1, 2016)


Total Population 872
Population in Households 870
Population in Familes 750
Population in Group Qrtrs 2
Population Density1 115
Diversity Index2 9


Total Households 337
Average Household Size 2.58
Family Households 256
Average Family Size 3


Total Housing Units 354 (100%)
Owner Occupied HU 292 (82.5%)
Renter Occupied HU 45 (12.7%)
Vacant Housing Units 17 ( 4.8%)
Median Home Value $292,500
Average Home Value $330,565


Median Household Income $69,252
Average Household Income $90,164
Per Capita Income $34,929
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.41% 0.34%
Households 0.39% 0.35%
Families 0.25% 0.23%
Median Household Income   1.38%
Per Capita Income   1.64%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Rohrersville, MD 21779 - Peer Comparisons by Rank and Percentile

The table below compares 21779 to the other 455 ZIP Codes in Maryland by rank and percentile using July 1, 2016 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 # 364 20th
Population Density1 # 340 25th
Diversity Index2 # 425 6th
Median Household Income # 253 45th
Per Capita Income # 226 51st

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