Shadow Lake, WA Profile: Facts & Data


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Shadow Lake, Washington - Basic Facts

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The Shadow Lake CDP(1) had a population of 2,343 as of July 1, 2021.

The primary coordinate point for Shadow Lake is located at latitude 47.4017 and longitude -122.0763 in King County. The formal boundaries for the Shadow Lake Census Designated Place encompass a land area of 5.2 sq. miles and a water area of 0.14 sq. miles.

The Shadow Lake Census Designated Place has a U2 Census Class Code which indicates a census designated place without an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Shadow Lake Census Designated Place is located within Tahoma-Maple Valley Division of King 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.

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  1. Shadow Lake 2021 Demographic Data
  2. Growth Rates for Shadow Lake (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Washington Research Tools (Easy Tools & Current Data)
  3. Washington Data Comparison Tool - 2021 Demographics

Shadow Lake, WA Data & Demographics (As of July 1, 2021)


Total Population 2,343 (100%)
Population in Households 2,343 (100.0%)
Population in Families 1,965 (83.9%)
Population in Group Quarters1 0
Population Density 450
Diversity Index2 33


Median Household Income $114,021
Average Household Income $148,447
% of Income for Mortgage4 24%
Per Capita Income $55,446
Wealth Index5 252


Total HU (Housing Units) 901 (100%)
Owner Occupied HU 773 (85.8%)
Renter Occupied HU 103 (11.4%)
Vacant Housing Units 25 ( 2.8%)
Median Home Value $648,831
Average Home Value $739,586
Housing Affordability Index3 101


Total Households 876
Average Household Size 2.67
Family Households 655
Average Family Size 3
  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.


2010-2021 2021-2026
Population 0.31% 0.31%
Households 0.21% 0.18%
Families 0.35% 0.24%
Median Household Income   3.69%
Per Capita Income   2.89%
Owner Occupied HU   0.39%

Shadow Lake, WA - Peer Comparisons by Rank and Percentile

The table below compares Shadow Lake to the other 625 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2021 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 # 300 52nd
Population Density # 433 31st
Median Household Income # 55 91st
Housing Affordability Index # 194 31st
Per Capita Income # 51 92nd
Diversity Index # 357 43rd

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

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