Potomac, MD 20854 ZIP Code Profile

Related Place Profiles:
Potomac, MD | Rockville, MD

ZIP Code 20854: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Potomac, MD 20854

Acceptable Alternative
Rockville, MD 20854

  • ZIP Code Type: STANDARD
  • County: Montgomery County
  • Centroid: Latitude 39.029, Longitude -77.241
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 387
  • PO Box Addresses: 0
  • Residential Addresses: 17,252
    • Multi-Family Addresses: 410
    • Single Family Addresses: 16,842

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.


20854 ZIP Code Map

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Potomac, MD 20854 Data & Demographics (As of July 1, 2017)


Total Population 52,083
Daytime Population: Workers 11,322
Daytime Population: Residents 26,916
Total Daytime Population (TDP) 38,238
Ratio TDP/Total Population1 0.73
Population in Households 51,582
Population in Familes 47,909
Population in Group Qrtrs 501
Population Density2 1,515
Diversity Index3 55


Median Household Income $200,001
Average Household Income $262,096
Per Capita Income $88,366


Total Housing Units 17,847 (100%)
Owner Occupied HU 15,967 (89.5%)
Renter Occupied HU 1,523 ( 8.5%)
Vacant Housing Units 357 ( 2.0%)
Median Home Value $905,205
Average Home Value $919,146


Total Households 17,490
Average Household Size 2.95
Family Households 15,138
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 0.64% 0.72%
Households 0.56% 0.64%
Families 0.51% 0.61%
Median Household Income   0.0%
Per Capita Income   1.26%

Potomac, MD 20854 - Peer Comparisons by Rank and Percentile

The table below compares 20854 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 # 16 97th
Population Density # 131 72nd
Diversity Index # 122 74th
Median Household Income # 1 100th
Per Capita Income # 7 99th

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

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