Census tract · King County
Census Tract 316.05, King County, Washington
Census Tract 316.05, GEOID 53033031605, in King County, Washington, mostly within Black Diamond (59% of its census blocks). 3,973 residents in the ACS 2020-2024 5-year estimates (±701); the 2020 Census counted 3,686.
Residents, 2020-2024
3,973
±701 (90% margin)
2020 Census count: 3,686
Median household income
$146,750
±$49,222 (90% margin)
King County: $124,746
Median home value
$888,800
±$113,743 (90% margin)
King County: $859,900
Median gross rent
$1,257
±$281 (90% margin)
King County: $2,092
Where is Census Tract 316.05?
Census Tract 316.05 is one of 495 census tracts in King County, Washington. It covers 5.94 square miles of land, 620 residents per square mile in 2020. Its GEOID, 53033031605, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Black Diamond | 59% |
| Lake Morton-Berrydale | 13% |
| Maple Valley | 2% |
5 census tracts border Census Tract 316.05: Tract 312.04 ($141,250), Tract 316.01 ($130,739), Tract 316.03 ($144,573), Tract 316.04 ($144,879) and Tract 320.06 ($125,694). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 316.05?
The 2020-2024 American Community Survey puts Census Tract 316.05's population at 3,973 (±701) in 1,487 households; the 2020 Census counted 3,686 residents and 1,405 housing units.
| Measure | Tract 316.05 | Black Diamond |
|---|---|---|
| Total population | 3,973±701 | 5,961 |
| Households | 1,487±169 | 2,316 |
| Average household size | 2.67±0.29 | 2.57 |
| Housing units | 1,526±171 | 2,442 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 316.05?
The median resident of Census Tract 316.05 is 42.2 years old; 26.1% are under 18 and 16.6% are 65 or older. The largest group is non-Hispanic white residents at 75.0%, then Hispanic or Latino residents (of any race) at 12.7%. 13.9% of residents were born outside the United States.
| Measure | Tract 316.05 | Black Diamond |
|---|---|---|
| Median age | 42.2±6.1 | 38.1 |
| Under 18 years | 26.1%±8.4 pts | 24.9% |
| 65 years and over | 16.6%±5.1 pts | 10.2% |
| Hispanic or Latino (any race) | 12.7%±12.9 pts | 7.9% |
| White alone, not Hispanic | 75.0%±12.2 pts | 67.0% |
| Black or African American alone, not Hispanic | 0.0%±1.0 pts | 0.4% |
| Asian alone, not Hispanic | 10.1%±5.9 pts | 17.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.0 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.0 pts | 0.0% |
| Two or more races, not Hispanic | 2.2%±1.7 pts | 6.4% |
| Some other race alone, not Hispanic | 0.1%±0.3 pts | 0.6% |
| Born outside the United States | 13.9%±6.6 pts | 19.0% |
| Speak a language other than English at home (age 5+) | 18.0%±13.2 pts | 18.0% |
| Civilian veterans (age 18+) | 6.4%±2.6 pts | 5.9% |
| With a disability | 10.1%±4.7 pts | 8.2% |
| No health insurance coverage | 3.5%±3.1 pts | 2.5% |
| High school graduate or higher (age 25+) | 97.4%±2.6 pts | 97.7% |
| Bachelor's degree or higher (age 25+) | 41.7%±7.5 pts | 54.7% |
| Graduate or professional degree (age 25+) | 14.5%±4.5 pts | 17.9% |
| Lived in the same house a year earlier | 94.1%±2.7 pts | 86.6% |
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 Census Tract 316.05 earn?
Half of the 1,487 households in Census Tract 316.05 earn less than $146,750 a year (±$49,222), against $124,746 across King County: 174th highest of the county's 491 tracts with a reliable estimate.
| Measure | Tract 316.05 | Black Diamond |
|---|---|---|
| Median household income | $146,750±$49,222 | $141,383 |
| Mean household income | $182,305±$20,700 | $166,104 |
| Per capita income | $68,782±$12,533 | $65,562 |
| People below the poverty line | 3.1%±2.4 pts | 2.1% |
| Children under 18 below the poverty line | 1.4%±2.7 pts | 2.5% |
| Households receiving SNAP | 0.0%±2.7 pts | 2.1% |
| Households with a computer | 100.0%±2.7 pts | 100.0% |
| Households with a broadband subscription | 99.2%±1.2 pts | 95.9% |
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 Census Tract 316.05?
Owners occupy 87.0% of Census Tract 316.05's occupied homes and renters 13.0%. The median owner-occupied home is valued at $888,800 by its owner (±$113,743). The median renter pays $1,257 a month including utilities.
| Measure | Tract 316.05 | Black Diamond |
|---|---|---|
| Median home value (owner-occupied) | $888,800±$113,743 | $779,100 |
| Median gross rent | $1,257±$281 | $1,453 |
| Renters paying 35% or more of income on rent | 26.3%±28.3 pts | 22.4% |
| Median monthly owner costs, with a mortgage | $3,310±$339 | $3,068 |
| Owner-occupied homes | 87.0%±5.2 pts | 86.0% |
| Renter-occupied homes | 13.0%±5.2 pts | 14.0% |
| Housing units | 1,526±171 | 2,442 |
| Single-family detached homes | 86.7%±7.4 pts | 84.9% |
| Mobile homes | 7.1%±6.3 pts | 2.6% |
| Built 2020 or later | 4.3%±2.4 pts | 23.2% |
| Built 2010 to 2019 | 9.8%±5.0 pts | 17.7% |
| Built 1939 or earlier | 2.4%±2.7 pts | 5.8% |
| Households with no vehicle | 0.0%±2.7 pts | 3.5% |
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 Census Tract 316.05 get to work?
78.0% of Census Tract 316.05's workers drive alone and 10.7% work from home. The average trip to work takes 42.0 minutes.
| Measure | Tract 316.05 | Black Diamond |
|---|---|---|
| In the labor force (age 16+) | 68.8%±5.1 pts | 74.1% |
| Unemployment rate | 1.3%±1.6 pts | 1.3% |
| Drove alone to work | 78.0%±6.8 pts | 63.9% |
| Carpooled | 7.8%±5.5 pts | 8.9% |
| Public transportation | 0.4%±0.8 pts | 0.2% |
| Walked | 2.6%±2.3 pts | 0.8% |
| Worked from home | 10.7%±4.0 pts | 24.9% |
| Mean travel time to work | 42.0 min±8.1 | 37.5 min |
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
How does Census Tract 316.05 compare with the other tracts in King County?
Among King County's tracts with a reliable estimate, Census Tract 316.05 ranks as shown below (1 = highest).
| Measure | In King County | In Black Diamond |
|---|---|---|
| Population | 337th of 494 | 3rd of 3 |
| Residents per square mile | 472nd of 494 | 1st of 3 |
| Median household income | 174th of 491 | 1st of 3 |
| Per capita income | 268th of 494 | 1st of 3 |
| Median home value | 214th of 481 | 1st of 3 |
| Median gross rent | 477th of 483 | 3rd of 3 |
| Bachelor's degree or higher | 355th of 494 | 2nd of 3 |
| Median age | 103rd of 494 | 2nd of 3 |
| Owner-occupied share | 71st of 483 | 2nd of 3 |
The tracts next to it on King County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 323.31 | 171st | $149,657±$16,210 · within the margin of this tract |
| Tract 96 | 172nd | $148,125±$24,426 · within the margin of this tract |
| Tract 224.01 | 173rd | $147,344±$85,797 · within the margin of this tract |
| Tract 316.05 | 174th | $146,750±$49,222 |
| Tract 54.01 | 175th | $146,417±$35,176 · within the margin of this tract |
| Tract 222.04 | 176th | $146,319±$26,021 · within the margin of this tract |
| Tract 294.05 | 177th | $145,721±$15,500 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 316.05?
3 of the 18 figures for Census Tract 316.05 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.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). 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 · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections