Cottage Lake, WA Profile: Facts & Data


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Cottage Lake, Washington - Basic Facts

The Cottage Lake Census Designated Place had a population of 23,810 as of July 1, 2018.

The primary coordinate point for Cottage Lake is located at latitude 47.7465 and longitude -122.076 in King County. The formal boundaries for the Cottage Lake Census Designated Place (see map below) encompass a land area of 22.66 sq. miles and a water area of 0.13 sq. miles. King County is in the Pacific time zone (GMT -8). The elevation is 236 feet.

The Cottage Lake Census Designated Place (GNIS ID: 2407667) 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.

Washington is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Cottage Lake Census Designated Place is located within Seattle East Division of King County.

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  1. Cottage Lake 2018 Demographic Data
  2. Growth Rates for Cottage 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 - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Cottage Lake, WA Data & Demographics (As of July 1, 2018)


Total Population 23,810
Population in Households 23,776
Population in Familes 22,013
Population in Group Qrtrs 34
Population Density2 1,051
Diversity Index3 31


Median Household Income $152,215
Average Household Income $195,373
Per Capita Income $65,731


Total Housing Units 8,247 (100%)
Owner Occupied HU 7,422 (90.0%)
Renter Occupied HU 565 ( 6.9%)
Vacant Housing Units 259 ( 3.1%)
Median Home Value $725,427
Average Home Value $808,773


Total Households 7,988
Average Household Size 2.98
Family Households 6,862
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population 0.69% 0.78%
Households 0.49% 0.6%
Families 0.54% 0.65%
Median Household Income   0.83%
Per Capita Income   1.56%

Cottage Lake, WA - Peer Comparisons by Rank and Percentile

The table below compares Cottage Lake to the other 627 incorporated cities, towns and CDPs in Washington by rank and percentile using July 1, 2018 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 # 49 92nd
Population Density # 290 54th
Diversity Index # 353 44th
Median Household Income # 8 99th
Per Capita Income # 13 98th

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

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Compare Washington July 1, 2018 Data
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