Potomac, MD Profile: Facts & Data

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Potomac, Maryland - Basic Facts

The Potomac CDP(1) had a population of 46,951 as of July 1, 2024. Potomac ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Maryland. See peer rankings below.

The primary coordinate point for Potomac is located at latitude 39.0182 and longitude -77.2086 in Montgomery County. The formal boundaries for the Potomac Census Designated Place encompass a land area of 25.13 sq. miles and a water area of 1.45 sq. miles. Montgomery County is in the Eastern time zone (GMT -5).

The Potomac Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Potomac Census Designated Place is located within District 10, a minor civil division (MCD) of Montgomery County.


  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

Jump to... (On This Page!)
  1. Potomac 2024 Demographic Data
  2. Growth Rates for Potomac (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 - 2024 Demographics
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Potomac, MD Data & Demographics (As of July 1, 2024)

POPULATION

Total Population 46,951 (100%)
Population in Households 46,484 (99.0%)
Population in Families 41,981 (89.4%)
Population in Group Quarters1 467 ( 1.0%)
Population Density 1,866
Diversity Index2 65
 
 

INCOME

Median Household Income $200,001
Average Household Income $289,058
% of Income for Mortgage4 32%
Per Capita Income $101,397
Wealth Index5 316
Socioeconomic Status Index6 High (68.9)
 

HOUSING

Total HU (Housing Units) 17,428 (100%)
Owner Occupied HU 14,121 (81.0%)
Renter Occupied HU 2,346 (13.5%)
Vacant Housing Units 961 ( 5.5%)
Median Home Value $1,008,402
Average Home Value $1,132,363
Housing Affordability Index3 78
 

HOUSEHOLDS

Total Households 16,467
Average Household Size 2.82
Family Households 13,034
Average Family Size 3.00
NOTES
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR

2020-2024 2024-2029
Population -0.03% 0.34%
Households -0.10% 0.32%
Families   0.19%
Median Household Income   0.00%
Per Capita Income   1.91%
Owner Occupied HU   0.22%

Potomac, MD - Peer Comparisons by Rank and Percentile

The table below compares Potomac to the other 536 incorporated cities, towns and CDPs in Maryland by rank and percentile using July 1, 2024 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 # 20 96th
Population Density # 210 61st
Median Household Income # 1 96th
Housing Affordability Index # 194 36th
Per Capita Income # 17 97th
Diversity Index # 138 75th

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

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