Census-designated place · Washington
Lake Morton-Berrydale, Washington
Lake Morton-Berrydale, census-designated place, in King County, Washington. Lake Morton-Berrydale had 11,183 people in the ACS 2020-2024 5-year estimates (±1,156). GEOID 5337567.
Residents, 2020-2024
11,183
±1,156 (90% margin)
2020 Census count: 10,474
Median household income
$129,833
±$11,241 (90% margin)
Washington: $98,141
Median home value
$714,200
±$38,548 (90% margin)
Washington: $564,600
Median gross rent
$2,017
±$775 (90% margin)
Washington: $1,760
Where is Lake Morton-Berrydale and what county is it in?
Lake Morton-Berrydale is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in King County, Washington. It covers 12.3 square miles of land, 850 residents per square mile in 2020.
Lake Morton-Berrydale is in the Seattle-Tacoma-Bellevue, WA metropolitan statistical area, which takes in 3 counties (Census Bureau delineation, July 2023).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Lake Morton-Berrydale, and is it growing?
The 2020-2024 American Community Survey puts Lake Morton-Berrydale's population at 11,183 (±1,156). The 2020 Census counted 10,474 residents.
The Census Bureau publishes yearly population estimates for incorporated places only; Lake Morton-Berrydale is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Lake Morton-Berrydale | King County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 11,183 ±1,156 | 2,287,171 | no clear change |
| Households | 3,780 ±329 | 941,054 | no clear change |
| Average household size | 2.95 ±0.18 | 2.39 | no clear change |
| Housing units | 3,806 ±315 | 1,003,284 | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Lake Morton-Berrydale?
The median resident of Lake Morton-Berrydale is 41.9 years old; 25.4% are under 18 and 15.8% are 65 or older. The largest group is non-Hispanic white residents at 67.0%, then Hispanic or Latino residents (of any race) at 11.4%. 17.0% of residents were born outside the United States.
| Measure | Lake Morton-Berrydale | King County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 41.9 ±2.9 | 37.4 | no clear change |
| Under 18 years | 25.4% ±3.7 pts | 19.5% | – |
| 65 years and over | 15.8% ±2.5 pts | 14.0% | – |
| Male | 54.8% ±2.4 pts | 50.7% | – |
| Hispanic or Latino (any race) | 11.4% ±3.9 pts | 11.0% | no clear change |
| White alone, not Hispanic | 67.0% ±6.0 pts | 52.9% | −11.6 pts |
| Black or African American alone, not Hispanic | 0.5% ±0.6 pts | 6.4% | – |
| Asian alone, not Hispanic | 11.0% ±5.1 pts | 20.5% | +8.3 pts |
| American Indian and Alaska Native alone, not Hispanic | 1.2% ±0.9 pts | 0.4% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.3% ±0.3 pts | 0.7% | – |
| Two or more races, not Hispanic | 7.0% ±4.0 pts | 7.3% | – |
| Some other race alone, not Hispanic | 1.5% ±1.8 pts | 0.6% | – |
| Born outside the United States | 17.0% ±5.3 pts | 25.8% | +7.6 pts |
| Speak a language other than English at home (age 5+) | 21.3% ±6.4 pts | 31.1% | – |
| Civilian veterans (age 18+) | 10.0% ±2.4 pts | 4.5% | – |
| With a disability | 9.0% ±2.1 pts | 10.3% | – |
| No health insurance coverage | 1.4% ±0.8 pts | 5.2% | −7.0 pts |
| High school graduate or higher (age 25+) | 93.2% ±2.4 pts | 93.8% | – |
| Bachelor's degree or higher (age 25+) | 34.6% ±4.1 pts | 56.7% | no clear change |
| Graduate or professional degree (age 25+) | 13.1% ±2.4 pts | 24.2% | – |
| Lived in the same house a year earlier | 85.1% ±5.4 pts | 83.3% | – |
| Moved from another state in the past year | 0.5% ±0.5 pts | 3.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Lake Morton-Berrydale earn?
Half of Lake Morton-Berrydale's 3,780 households earn less than $129,833 a year (±$11,241), against $124,746 in King County and $98,141 in Washington. In 2015-2019 it was $126,094 in 2024 dollars; the margins of error cannot tell the two periods apart.
| Measure | Lake Morton-Berrydale | King County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $129,833 ±$11,241 | $124,746 | no clear change |
| Mean household income | $160,354 ±$18,075 | $176,799 | – |
| Per capita income | $54,390 ±$4,793 | $74,100 | no clear change |
| People below the poverty line | 3.7% ±2.5 pts | 8.6% | – |
| Children under 18 below the poverty line | 5.5% ±4.6 pts | 9.7% | – |
| Households receiving SNAP | 5.5% ±2.4 pts | 8.2% | – |
| Households with a computer | 98.8% ±1.0 pts | 98.1% | – |
| Households with a broadband subscription | 97.2% ±1.5 pts | 95.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Lake Morton-Berrydale?
Owners occupy 88.6% of Lake Morton-Berrydale's occupied homes and renters 11.4%. The median owner-occupied home is valued at $714,200 by its owner (±$38,548). The median renter pays $2,017 a month including utilities.
| Measure | Lake Morton-Berrydale | King County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $714,200 ±$38,548 | $859,900 | +$204,324 |
| Median gross rent | $2,017 ±$775 | $2,092 | no clear change |
| Renters paying 35% or more of income on rent | 33.7% ±23.2 pts | 37.5% | – |
| Median monthly owner costs, with a mortgage | $2,910 ±$172 | $3,273 | – |
| Owner-occupied homes | 88.6% ±5.1 pts | 55.4% | no clear change |
| Renter-occupied homes | 11.4% ±5.1 pts | 44.6% | – |
| Housing units | 3,806 ±315 | 1,003,284 | no clear change |
| Homeowner vacancy rate | 0.0% ±1.2 pts | 0.7% | – |
| Rental vacancy rate | 0.0% ±8.9 pts | 5.3% | – |
| Single-family detached homes | 95.5% ±2.1 pts | 50.0% | – |
| Mobile homes | 3.7% ±2.0 pts | 1.4% | – |
| Built 2020 or later | 3.3% ±2.8 pts | 2.1% | – |
| Built 2010 to 2019 | 4.2% ±2.4 pts | 14.2% | – |
| Built 1939 or earlier | 5.0% ±4.4 pts | 10.9% | – |
| Households with no vehicle | 1.2% ±0.8 pts | 11.2% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Lake Morton-Berrydale work and get to work?
70.8% of Lake Morton-Berrydale's workers drive alone and 18.3% work from home. The average trip to work takes 38.4 minutes. The unemployment rate in 2020-2024 averaged 3.6%.
| Measure | Lake Morton-Berrydale | King County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 65.6% ±3.9 pts | 69.9% | – |
| Unemployment rate | 3.6% ±1.5 pts | 4.8% | no clear change |
| Drove alone to work | 70.8% ±4.2 pts | 50.4% | – |
| Carpooled | 7.9% ±3.2 pts | 7.0% | – |
| Public transportation | 1.3% ±1.2 pts | 6.8% | – |
| Walked | 1.4% ±1.0 pts | 4.3% | – |
| Worked from home | 18.3% ±3.7 pts | 29.2% | +12.4 pts |
| Mean travel time to work | 38.4 min ±2.6 | 27.6 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Lake Morton-Berrydale?
2 census tracts lie mostly in Lake Morton-Berrydale, and 5 more reach into it (2020 census blocks). Their median household incomes run from $125,694 (Tract 320.06) to $130,739 (Tract 316.01).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 316.01King County | 5,961 | $130,739 |
| Tract 320.06King County | 5,300 | $125,694 |
| Tract 312.04King County | 6,109 | $141,250 |
| Tract 317.04King County | 6,585 | $117,674 |
| Tract 312.07King County | 4,650 | $104,500 |
| Tract 316.05King County | 3,973 | $146,750 |
| Tract 312.06King County | 5,514 | $101,555 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Lake Morton-Berrydale) · Census block assignment files
How does Lake Morton-Berrydale compare with other places in Washington?
Lake Morton-Berrydale ranks 80th of 387 places in Washington with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population (ACS 2020-2024) | 118th | 393 |
| Residents per square mile | 278th | 394 |
| Median household income | 80th | 387 |
| Per capita income | 111th | 393 |
| Median home value | 80th | 384 |
| Median gross rent | 87th | 351 |
| Bachelor's degree or higher | 146th | 382 |
| Median age | 153rd | 394 |
| Owner-occupied share | 64th | 388 |
| Work from home | 131st | 307 |
| Travel time to work | 28th | 394 |
Lake Morton-Berrydale's figures with every place in Washington (CSV)
Every place in Washington, sortable · Compare Lake Morton-Berrydale with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Lake Morton-Berrydale?
15 of the 57 figures for Lake Morton-Berrydale on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Lake Morton-Berrydale are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.