Dickerson, MD 20842 ZIP Code Profile

Related Place Profiles:
Comus, MD | Dickerson, MD

ZIP Code 20842: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Dickerson, MD 20842

Not Acceptable, USPS
Comus, MD 20842

  • ZIP Code Type: STANDARD
  • County: Montgomery County
  • Centroid: Latitude 39.204, Longitude -77.422
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 20842 has segments in 2 Counties / Independent Cities (Frederick, Montgomery).

  • Businesses Addresses: 43
  • PO Box Addresses: 57
  • Residential Addresses: 708
    • Multi-Family Addresses: 0
    • Single Family Addresses: 708

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

EXTREMELY LOCAL Demographic 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 demographic data.


20842 ZIP Code Map

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Dickerson, MD 20842 Data & Demographics (As of July 1, 2017)


Total Population 1,986
Daytime Population: Workers 829
Daytime Population: Residents 930
Total Daytime Population (TDP) 1,759
Ratio TDP/Total Population1 0.89
Population in Households 1,978
Population in Familes 1,676
Population in Group Qrtrs 8
Population Density2 40
Diversity Index3 35


Median Household Income $109,965
Average Household Income $146,452
Per Capita Income $55,604


Total Housing Units 814 (100%)
Owner Occupied HU 590 (72.5%)
Renter Occupied HU 162 (19.9%)
Vacant Housing Units 62 ( 7.6%)
Median Home Value $645,963
Average Home Value $672,034


Total Households 752
Average Household Size 2.63
Family Households 548
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 1.07% 1.51%
Households 1.09% 1.42%
Families 1.02% 1.38%
Median Household Income   1.21%
Per Capita Income   1.8%

Dickerson, MD 20842 - Peer Comparisons by Rank and Percentile

The table below compares 20842 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 # 313 32nd
Population Density # 419 8th
Diversity Index # 262 43rd
Median Household Income # 74 84th
Per Capita Income # 44 91st

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

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