Census tract · King County
Census Tract 318, King County, Washington
Census Tract 318, GEOID 53033031800, in King County, Washington, partly within Shadow Lake, Kent and Covington. 5,190 residents in the ACS 2020-2024 5-year estimates (±536); the 2020 Census counted 4,944.
Residents, 2020-2024
5,190
±536 (90% margin)
2020 Census count: 4,944
Median household income
$139,583
±$12,288 (90% margin)
King County: $124,746
Median home value
$728,500
±$45,933 (90% margin)
King County: $859,900
Median gross rent
$1,814
±$498 (90% margin)
King County: $2,092
Where is Census Tract 318?
Census Tract 318 is one of 495 census tracts in King County, Washington. It covers 9.62 square miles of land, 514 residents per square mile in 2020. Its GEOID, 53033031800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Shadow Lake | 27% |
| Kent | 23% |
| Covington | 1% |
8 census tracts border Census Tract 318: Tract 293.07 ($116,875), Tract 294.05 ($145,721), Tract 294.06 ($128,259), Tract 317.05 ($161,250), Tract 317.07 ($120,179), Tract 319.06 ($138,375), Tract 319.09 ($103,906) and Tract 320.07 ($183,929). 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 318?
The 2020-2024 American Community Survey puts Census Tract 318's population at 5,190 (±536) in 1,699 households; the 2020 Census counted 4,944 residents and 1,768 housing units.
| Measure | Tract 318 | King County |
|---|---|---|
| Total population | 5,190±536 | 2,287,171 |
| Households | 1,699±161 | 941,054 |
| Average household size | 3.05±0.18 | 2.39 |
| Housing units | 1,740±154 | 1,003,284 |
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 318?
The median resident of Census Tract 318 is 42.9 years old; 21.4% are under 18 and 16.0% are 65 or older. The largest group is non-Hispanic white residents at 60.0%, then non-Hispanic Asian residents at 18.9%. 21.4% of residents were born outside the United States.
| Measure | Tract 318 | King County |
|---|---|---|
| Median age | 42.9±4.6 | 37.4 |
| Under 18 years | 21.4%±3.6 pts | 19.5% |
| 65 years and over | 16.0%±2.3 pts | 14.0% |
| Hispanic or Latino (any race) | 6.4%±3.0 pts | 11.0% |
| White alone, not Hispanic | 60.0%±5.3 pts | 52.9% |
| Black or African American alone, not Hispanic | 3.7%±4.2 pts | 6.4% |
| Asian alone, not Hispanic | 18.9%±3.9 pts | 20.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.8 pts | 0.4% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 1.0%±1.2 pts | 0.7% |
| Two or more races, not Hispanic | 9.7%±3.4 pts | 7.3% |
| Some other race alone, not Hispanic | 0.3%±0.4 pts | 0.6% |
| Born outside the United States | 21.4%±4.1 pts | 25.8% |
| Speak a language other than English at home (age 5+) | 31.5%±6.2 pts | 31.1% |
| Civilian veterans (age 18+) | 7.6%±2.3 pts | 4.5% |
| With a disability | 9.6%±2.7 pts | 10.3% |
| No health insurance coverage | 1.7%±1.5 pts | 5.2% |
| High school graduate or higher (age 25+) | 93.8%±2.9 pts | 93.8% |
| Bachelor's degree or higher (age 25+) | 33.3%±5.9 pts | 56.7% |
| Graduate or professional degree (age 25+) | 11.3%±2.9 pts | 24.2% |
| Lived in the same house a year earlier | 93.4%±4.0 pts | 83.3% |
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 318 earn?
Half of the 1,699 households in Census Tract 318 earn less than $139,583 a year (±$12,288), against $124,746 across King County: 204th highest of the county's 491 tracts with a reliable estimate.
| Measure | Tract 318 | King County |
|---|---|---|
| Median household income | $139,583±$12,288 | $124,746 |
| Mean household income | $184,998±$49,356 | $176,799 |
| Per capita income | $60,913±$17,042 | $74,100 |
| People below the poverty line | 2.5%±1.8 pts | 8.6% |
| Children under 18 below the poverty line | 2.2%±3.4 pts | 9.7% |
| Households receiving SNAP | 2.2%±2.1 pts | 8.2% |
| Households with a computer | 98.8%±1.3 pts | 98.1% |
| Households with a broadband subscription | 97.5%±2.5 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 Census Tract 318?
Owners occupy 91.5% of Census Tract 318's occupied homes and renters 8.5%. The median owner-occupied home is valued at $728,500 by its owner (±$45,933). The median renter pays $1,814 a month including utilities, and 36.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 318 | King County |
|---|---|---|
| Median home value (owner-occupied) | $728,500±$45,933 | $859,900 |
| Median gross rent | $1,814±$498 | $2,092 |
| Renters paying 35% or more of income on rent | 36.8%±23.7 pts | 37.5% |
| Median monthly owner costs, with a mortgage | $2,852±$342 | $3,273 |
| Owner-occupied homes | 91.5%±3.8 pts | 55.4% |
| Renter-occupied homes | 8.5%±3.8 pts | 44.6% |
| Housing units | 1,740±154 | 1,003,284 |
| Single-family detached homes | 94.3%±3.5 pts | 50.0% |
| Mobile homes | 1.0%±1.2 pts | 1.4% |
| Built 2020 or later | 0.0%±2.3 pts | 2.1% |
| Built 2010 to 2019 | 5.1%±3.3 pts | 14.2% |
| Built 1939 or earlier | 3.4%±3.2 pts | 10.9% |
| Households with no vehicle | 1.1%±1.2 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 Census Tract 318 get to work?
75.3% of Census Tract 318's workers drive alone and 12.6% work from home. The average trip to work takes 33.2 minutes. The unemployment rate in 2020-2024 averaged 3.2%.
| Measure | Tract 318 | King County |
|---|---|---|
| In the labor force (age 16+) | 66.8%±4.9 pts | 69.9% |
| Unemployment rate | 3.2%±2.1 pts | 4.8% |
| Drove alone to work | 75.3%±5.2 pts | 50.4% |
| Carpooled | 9.4%±4.4 pts | 7.0% |
| Public transportation | 1.8%±2.0 pts | 6.8% |
| Walked | 0.9%±0.9 pts | 4.3% |
| Worked from home | 12.6%±3.9 pts | 29.2% |
| Mean travel time to work | 33.2 min±2.6 | 27.6 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 318 compare with the other tracts in King County?
Among King County's tracts with a reliable estimate, Census Tract 318 ranks as shown below (1 = highest).
| Measure | In King County |
|---|---|
| Population | 150th of 494 |
| Residents per square mile | 473rd of 494 |
| Median household income | 204th of 491 |
| Per capita income | 311th of 494 |
| Median home value | 295th of 481 |
| Median gross rent | 379th of 483 |
| Bachelor's degree or higher | 399th of 494 |
| Median age | 88th of 494 |
| Owner-occupied share | 33rd of 483 |
The tracts next to it on King County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 279.01 | 201st | $140,000±$56,710 · within the margin of this tract |
| Tract 28 | 202nd | $139,955±$25,833 · within the margin of this tract |
| Tract 257.02 | 203rd | $139,609±$13,082 · within the margin of this tract |
| Tract 318 | 204th | $139,583±$12,288 |
| Tract 251.03 | 205th | $139,167±$45,293 · within the margin of this tract |
| Tract 220.06 | 206th | $139,125±$30,913 · within the margin of this tract |
| Tract 320.02 | 207th | $139,111±$27,236 · 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 318?
2 of the 18 figures for Census Tract 318 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