Census tract · King County
Census Tract 31, King County, Washington
Census Tract 31, GEOID 53033003100, in King County, Washington, entirely within Seattle. 6,742 residents in the ACS 2020-2024 5-year estimates (±770); the 2020 Census counted 6,545.
Residents, 2020-2024
6,742
±770 (90% margin)
2020 Census count: 6,545
Median household income
$191,625
±$26,839 (90% margin)
King County: $124,746
Median home value
$1,111,200
±$65,176 (90% margin)
King County: $859,900
Median gross rent
$2,599
±$971 (90% margin)
King County: $2,092
Where is Census Tract 31?
Census Tract 31 is one of 495 census tracts in King County, Washington. It covers 0.85 square miles of land, 7,709 residents per square mile in 2020. Its GEOID, 53033003100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Seattle | 100% |
6 census tracts border Census Tract 31: Tract 15 ($193,750), Tract 16 ($236,500), Tract 30 ($182,500), Tract 32.01 ($131,544), Tract 32.02 ($175,303) and Tract 33.01 ($131,353). 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 31?
The 2020-2024 American Community Survey puts Census Tract 31's population at 6,742 (±770) in 2,745 households; the 2020 Census counted 6,545 residents and 2,745 housing units.
| Measure | Tract 31 | Seattle |
|---|---|---|
| Total population | 6,742 ±770 | 754,195 |
| Households | 2,745 ±239 | 363,466 |
| Average household size | 2.45 ±0.14 | 2.00 |
| Housing units | 2,806 ±234 | 393,918 |
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 31?
The median resident of Census Tract 31 is 43.7 years old; 24.2% are under 18 and 18.4% are 65 or older. The largest group is non-Hispanic white residents at 75.2%, then non-Hispanic residents of two or more races at 12.1%. 13.1% of residents were born outside the United States.
| Measure | Tract 31 | Seattle |
|---|---|---|
| Median age | 43.7 ±3.3 | 35.6 |
| Under 18 years | 24.2% ±3.2 pts | 13.8% |
| 65 years and over | 18.4% ±3.7 pts | 13.0% |
| Hispanic or Latino (any race) | 6.0% ±3.2 pts | 8.5% |
| White alone, not Hispanic | 75.2% ±6.3 pts | 58.8% |
| Black or African American alone, not Hispanic | 0.8% ±1.0 pts | 6.4% |
| Asian alone, not Hispanic | 5.5% ±1.9 pts | 17.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.3% ±0.6 pts | 0.3% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.6 pts | 0.2% |
| Two or more races, not Hispanic | 12.1% ±6.2 pts | 7.7% |
| Some other race alone, not Hispanic | 0.0% ±0.6 pts | 0.6% |
| Born outside the United States | 13.1% ±5.1 pts | 20.2% |
| Speak a language other than English at home (age 5+) | 14.4% ±5.9 pts | 23.7% |
| Civilian veterans (age 18+) | 3.1% ±1.7 pts | 3.3% |
| With a disability | 10.4% ±3.5 pts | 10.3% |
| No health insurance coverage | 1.1% ±1.1 pts | 4.2% |
| High school graduate or higher (age 25+) | 99.6% ±0.5 pts | 96.0% |
| Bachelor's degree or higher (age 25+) | 76.3% ±4.8 pts | 68.4% |
| Graduate or professional degree (age 25+) | 40.8% ±5.1 pts | 30.6% |
| Lived in the same house a year earlier | 94.8% ±2.6 pts | 78.1% |
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 31 earn?
Half of the 2,745 households in Census Tract 31 earn less than $191,625 a year (±$26,839), against $124,746 across King County: 66th highest of the county's 491 tracts with a reliable estimate. 4.3% of residents live below the poverty line.
| Measure | Tract 31 | Seattle |
|---|---|---|
| Median household income | $191,625 ±$26,839 | $123,860 |
| Mean household income | $233,555 ±$22,908 | $175,209 |
| Per capita income | $96,135 ±$9,916 | $86,095 |
| People below the poverty line | 4.3% ±2.7 pts | 9.9% |
| Children under 18 below the poverty line | 4.7% ±5.2 pts | 9.3% |
| Households receiving SNAP | 6.0% ±4.9 pts | 7.4% |
| Households with a computer | 99.4% ±1.0 pts | 98.2% |
| Households with a broadband subscription | 94.4% ±3.9 pts | 94.5% |
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 31?
Owners occupy 79.4% of Census Tract 31's occupied homes and renters 20.6%. The median owner-occupied home is valued at $1,111,200 by its owner (±$65,176). The median renter pays $2,599 a month including utilities, and 28.4% of renters pay 35% or more of their income on rent.
| Measure | Tract 31 | Seattle |
|---|---|---|
| Median home value (owner-occupied) | $1,111,200 ±$65,176 | $938,600 |
| Median gross rent | $2,599 ±$971 | $2,030 |
| Renters paying 35% or more of income on rent | 28.4% ±18.1 pts | 35.0% |
| Median monthly owner costs, with a mortgage | $4,000 or more | $3,505 |
| Owner-occupied homes | 79.4% ±6.2 pts | 43.7% |
| Renter-occupied homes | 20.6% ±6.2 pts | 56.3% |
| Housing units | 2,806 ±234 | 393,918 |
| Single-family detached homes | 84.5% ±5.8 pts | 36.8% |
| Mobile homes | 0.0% ±1.4 pts | 0.1% |
| Built 2020 or later | 0.5% ±0.9 pts | 2.4% |
| Built 2010 to 2019 | 2.7% ±2.1 pts | 18.6% |
| Built 1939 or earlier | 42.1% ±6.9 pts | 22.8% |
| Households with no vehicle | 10.7% ±4.6 pts | 19.0% |
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 31 get to work?
44.0% of Census Tract 31's workers drive alone and 43.4% work from home. The average trip to work takes 30.3 minutes.
| Measure | Tract 31 | Seattle |
|---|---|---|
| In the labor force (age 16+) | 67.0% ±4.3 pts | 74.2% |
| Unemployment rate | 5.1% ±3.7 pts | 4.6% |
| Drove alone to work | 44.0% ±5.8 pts | 36.7% |
| Carpooled | 1.8% ±1.4 pts | 4.7% |
| Public transportation | 6.5% ±2.6 pts | 11.9% |
| Walked | 0.8% ±1.0 pts | 8.1% |
| Worked from home | 43.4% ±6.4 pts | 34.8% |
| Mean travel time to work | 30.3 min ±3.8 | 26.0 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 31 compare with the other tracts in King County?
Among King County's tracts with a reliable estimate, Census Tract 31 ranks as shown below (1 = highest).
| Measure | In King County | In Seattle |
|---|---|---|
| Population | 32nd of 494 | 5th of 177 |
| Residents per square mile | 159th of 494 | 125th of 177 |
| Median household income | 66th of 491 | 17th of 174 |
| Per capita income | 119th of 494 | 61st of 177 |
| Median home value | 114th of 481 | 39th of 166 |
| Median gross rent | 98th of 483 | 17th of 176 |
| Poverty rate | 270th of 316 | 119th of 136 |
| Bachelor's degree or higher | 108th of 494 | 69th of 177 |
| Median age | 69th of 494 | 18th of 177 |
| Owner-occupied share | 123rd of 483 | 17th of 168 |
The tracts next to it on King County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 15 | 63rd | $193,750±$57,625 · within the margin of this tract |
| Tract 234.04 | 63rd | $193,750±$60,040 · within the margin of this tract |
| Tract 322.11 | 65th | $191,667±$35,909 · within the margin of this tract |
| Tract 31 | 66th | $191,625±$26,839 |
| Tract 45 | 67th | $191,336±$46,815 · within the margin of this tract |
| Tract 26 | 68th | $190,750±$36,219 · within the margin of this tract |
| Tract 251.04 | 69th | $190,640±$34,900 · 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 31?
1 of the 18 figures for Census Tract 31 on this page carries a coefficient of variation over 40% and is 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