Lake Morton-Berrydale is a

census-designated place A census-designated place (CDP) is a Place (United States Census Bureau), concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counte ...

(CDP) in King County,

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

, United States. The population was 10,474 at the 2020 census. Based on

per capita income Per capita income (PCI) or average income measures the average income earned per person in a given area (city, region, country, etc.) in a specified year. In many countries, per capita income is determined using regular population surveys, such ...

, one of the more reliable measures of affluence, Lake Morton-Berrydale ranks 44th of 522 areas in the state of Washington to be ranked.

Geography

Lake Morton-Berrydale is located in southwestern King County and is bordered to the west by the city of Auburn, to the northwest by

Kent Kent is a Ceremonial counties of England, ceremonial county in South East England. It is bordered by Essex across the Thames Estuary to the north, the Strait of Dover to the south-east, East Sussex to the south-west, Surrey to the west, and Gr ...

, to the north by Covington, to the northeast by Maple Valley, to the east by Black Diamond, and to the south by the Lake Holm CDP. The southern border of the Lake Morton-Berrydale CDP follows Covington Creek and Big Soos Creek, which flows west to the Green River. The namesake water body of Lake Morton is in the eastern part of the CDP, and the unincorporated community of Berrydale is in the northwest. Washington State Route 18 forms the northwest border of the CDP, and leads northeast to

Interstate 90 Interstate 90 (I-90) is an east–west transcontinental freeway and the longest Interstate Highway in the United States at . It begins in Seattle, Washington, and travels through the Pacific Northwest, Mountain states, Mountain West, Great Pla ...

near Snoqualmie and southwest to Auburn. Downtown

Tacoma Tacoma ( ) is the county seat of Pierce County, Washington, United States. A port city, it is situated along Washington's Puget Sound, southwest of Seattle, southwest of Bellevue, northeast of the state capital, Olympia, northwest of Mount ...

is to the southwest, and downtown

Seattle Seattle ( ) is the most populous city in the U.S. state of Washington and in the Pacific Northwest region of North America. With a population of 780,995 in 2024, it is the 18th-most populous city in the United States. The city is the cou ...

is to the northwest. According to the

United States Census Bureau The United States Census Bureau, officially the Bureau of the Census, is a principal agency of the Federal statistical system, U.S. federal statistical system, responsible for producing data about the American people and American economy, econ ...

, the Lake Morton-Berrydale CDP has a total area of , of which are land and , or 1.60%, are water.

Demographics

As of the

census A census (from Latin ''censere'', 'to assess') is the procedure of systematically acquiring, recording, and calculating population information about the members of a given Statistical population, population, usually displayed in the form of stati ...

of 2000, there were 9,659 people, 3,245 households, and 2,735 families residing in the CDP. The

population density Population density (in agriculture: Standing stock (disambiguation), standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geog ...

was 773.6 people per square mile (298.6/km²). There were 3,312 housing units at an average density of 265.3/sq mi (102.4/km²). The racial makeup of the CDP was 92.50%

White White is the lightest color and is achromatic (having no chroma). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully (or almost fully) reflect and scatter all the visible wa ...

, 0.86%

African American African Americans, also known as Black Americans and formerly also called Afro-Americans, are an Race and ethnicity in the United States, American racial and ethnic group that consists of Americans who have total or partial ancestry from an ...

, 0.80% Native American, 2.09% Asian, 0.19%

Pacific Islander Pacific Islanders, Pasifika, Pasefika, Pacificans, or rarely Pacificers are the peoples of the list of islands in the Pacific Ocean, Pacific Islands. As an ethnic group, ethnic/race (human categorization), racial term, it is used to describe th ...

, 1.09% from other races, and 2.47% from two or more races.

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

or Latino of any race were 2.31% of the population. There were 3,245 households, out of which 43.3% had children under the age of 18 living with them, 74.5% were

married couples Marriage, also called matrimony or wedlock, is a culturally and often legally recognised union between people called spouses. It establishes rights and obligations between them, as well as between them and their children (if any), and b ...

living together, 6.3% had a female householder with no husband present, and 15.7% were non-families. 11.6% of all households were made up of individuals, and 2.6% had someone living alone who was 65 years of age or older. The average household size was 2.98 and the average family size was 3.21. In the CDP the population was spread out, with 29.1% under the age of 18, 6.4% from 18 to 24, 29.1% from 25 to 44, 28.7% from 45 to 64, and 6.6% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 105.5 males. For every 100 females age 18 and over, there were 103.9 males. The median income for a household in the CDP was $75,337, and the median income for a family was $80,516. Males had a median income of $54,151 versus $36,101 for females. The

for the CDP was $28,980. About 0.5% of families and 1.7% of the population were below the

poverty line The poverty threshold, poverty limit, poverty line, or breadline is the minimum level of income deemed adequate in a particular country. The poverty line is usually calculated by estimating the total cost of one year's worth of necessities for ...

, including none of those under age 18 and 3.6% of those age 65 or over.

References

{{King County, Washington Census-designated places in King County, Washington