Census-designated place · Washington
Sisco Heights, Washington
Sisco Heights, census-designated place, in Snohomish County, Washington. Sisco Heights had 3,140 residents in the 2020 Census, a full count; the ACS 2020-2024 5-year estimates put it at 3,015 (±550). GEOID 5364610.
Residents, 2020 Census
3,140
Census count or controlled total
ACS 2020-2024 estimate: 3,015 ±550
Median household income
$119,158
±$7,839 (90% margin)
Washington: $98,141
Median home value
$735,000
±$88,189 (90% margin)
Washington: $564,600
Median gross rent
$1,701
±$162 (90% margin)
Washington: $1,760
Where is Sisco Heights and what county is it in?
Sisco Heights is a census-designated place: an unincorporated community the Census Bureau draws for counting, with no city government of its own, in Snohomish County, Washington. It covers 13.8 square miles of land, 227 residents per square mile in 2020.
Sisco Heights 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 Sisco Heights, and is it growing?
The 2020 Census counted 3,140 residents in Sisco Heights, a full count rather than a sample. The 2020-2024 American Community Survey, a sample, estimates 3,015 (±550).
The Census Bureau publishes yearly population estimates for incorporated places only; Sisco Heights is a census-designated place, so its figures come from the ACS and the 2020 Census.
| Measure | Sisco Heights | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 3,015 ±550 | 844,430 | no clear change |
| Households | 1,051 ±153 | 316,212 | no clear change |
| Average household size | 2.87 ±0.28 | 2.64 | no clear change |
| Housing units | 1,155 ±134 | 331,530 | +208 |
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 Sisco Heights?
The median resident of Sisco Heights is 47.3 years old; 19.3% are under 18 and 17.9% are 65 or older. The largest group is non-Hispanic white residents at 80.8%, then Hispanic or Latino residents (of any race) at 9.7%. 5.7% of residents were born outside the United States.
| Measure | Sisco Heights | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 47.3 ±6.5 | 38.6 | no clear change |
| Under 18 years | 19.3% ±5.7 pts | 22.1% | – |
| 65 years and over | 17.9% ±4.3 pts | 14.8% | – |
| Male | 50.6% ±4.5 pts | 50.4% | – |
| Hispanic or Latino (any race) | 9.7% ±5.9 pts | 12.1% | – |
| White alone, not Hispanic | 80.8% ±7.6 pts | 62.0% | no clear change |
| Black or African American alone, not Hispanic | 0.0% ±1.3 pts | 3.6% | – |
| Asian alone, not Hispanic | 1.1% ±1.7 pts | 13.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.3 pts | 0.6% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.3 pts | 0.5% | – |
| Two or more races, not Hispanic | 8.4% ±5.7 pts | 6.9% | – |
| Some other race alone, not Hispanic | 0.0% ±1.3 pts | 0.7% | – |
| Born outside the United States | 5.7% ±3.2 pts | 19.3% | no clear change |
| Speak a language other than English at home (age 5+) | 7.2% ±4.8 pts | 24.4% | – |
| Civilian veterans (age 18+) | 7.0% ±3.0 pts | 6.9% | – |
| With a disability | 10.9% ±4.1 pts | 12.4% | – |
| No health insurance coverage | 3.7% ±1.9 pts | 6.2% | no clear change |
| High school graduate or higher (age 25+) | 95.1% ±2.6 pts | 93.1% | – |
| Bachelor's degree or higher (age 25+) | 27.6% ±6.5 pts | 38.2% | no clear change |
| Graduate or professional degree (age 25+) | 9.0% ±4.0 pts | 13.4% | – |
| Lived in the same house a year earlier | 88.8% ±7.4 pts | 87.3% | – |
| Moved from another state in the past year | 0.5% ±0.7 pts | 1.8% | – |
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 Sisco Heights earn?
Half of Sisco Heights's 1,051 households earn less than $119,158 a year (±$7,839), against $111,246 in Snohomish County and $98,141 in Washington. In 2015-2019 the median was $130,522 in 2024 dollars, so it fell by $11,364 after inflation. 7.1% of residents live below the poverty line.
| Measure | Sisco Heights | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $119,158 ±$7,839 | $111,246 | −$11,364 |
| Mean household income | $133,196 ±$16,803 | $142,821 | – |
| Per capita income | $46,889 ±$6,809 | $54,628 | no clear change |
| People below the poverty line | 7.1% ±3.6 pts | 8.0% | – |
| Children under 18 below the poverty line | 0.0% ±6.6 pts | 9.2% | – |
| Households receiving SNAP | 6.8% ±5.2 pts | 8.8% | – |
| Households with a computer | 96.4% ±4.7 pts | 97.7% | – |
| Households with a broadband subscription | 93.4% ±5.4 pts | 94.4% | – |
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 Sisco Heights?
Owners occupy 86.8% of Sisco Heights's occupied homes and renters 13.2%. The median owner-occupied home is valued at $735,000 by its owner (±$88,189). The median renter pays $1,701 a month including utilities, and 95.7% of renters pay 35% or more of their income on rent.
| Measure | Sisco Heights | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $735,000 ±$88,189 | $696,000 | +$219,955 |
| Median gross rent | $1,701 ±$162 | $1,949 | no clear change |
| Renters paying 35% or more of income on rent | 95.7% ±9.6 pts | 41.9% | – |
| Median monthly owner costs, with a mortgage | $2,643 ±$338 | $2,748 | – |
| Owner-occupied homes | 86.8% ±6.0 pts | 68.2% | no clear change |
| Renter-occupied homes | 13.2% ±6.0 pts | 31.8% | – |
| Housing units | 1,155 ±134 | 331,530 | +208 |
| Homeowner vacancy rate | 0.0% ±4.3 pts | 0.5% | – |
| Rental vacancy rate | 0.0% ±16.2 pts | 4.0% | – |
| Single-family detached homes | 71.2% ±10.3 pts | 63.9% | – |
| Mobile homes | 13.6% ±5.7 pts | 4.6% | – |
| Built 2020 or later | 15.2% ±6.1 pts | 2.6% | – |
| Built 2010 to 2019 | 7.1% ±3.7 pts | 12.2% | – |
| Built 1939 or earlier | 8.3% ±5.7 pts | 4.9% | – |
| Households with no vehicle | 5.9% ±5.1 pts | 4.7% | – |
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 Sisco Heights work and get to work?
78.2% of Sisco Heights's workers drive alone and 13.6% work from home. The average trip to work takes 34.5 minutes.
| Measure | Sisco Heights | Snohomish County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 58.5% ±6.4 pts | 67.3% | – |
| Unemployment rate | 2.5% ±2.7 pts | 4.5% | – |
| Drove alone to work | 78.2% ±8.7 pts | 65.0% | – |
| Carpooled | 6.1% ±5.7 pts | 9.1% | – |
| Public transportation | 0.0% ±2.8 pts | 2.8% | – |
| Walked | 0.0% ±2.8 pts | 1.6% | – |
| Worked from home | 13.6% ±6.2 pts | 20.0% | +8.2 pts |
| Mean travel time to work | 34.5 min ±3.2 | 30.8 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 Sisco Heights?
1 census tract lies mostly in Sisco Heights, and 4 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 527.01Snohomish County | 1,992 | $116,149 |
| Tract 535.05Snohomish County | 6,736 | $115,488 |
| Tract 527.09Snohomish County | 3,514 | $125,789 |
| Tract 528.03Snohomish County | 5,575 | $110,208 |
| Tract 528.08Snohomish County | 4,046 | $105,417 |
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 Sisco Heights) · Census block assignment files
How does Sisco Heights compare with other places in Washington?
Sisco Heights ranks 101st 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) | 259th | 393 |
| Residents per square mile | 388th | 394 |
| Median household income | 101st | 387 |
| Per capita income | 168th | 393 |
| Median home value | 73rd | 384 |
| Median gross rent | 169th | 351 |
| Poverty rate | 194th | 281 |
| Bachelor's degree or higher | 212th | 382 |
| Median age | 71st | 394 |
| Owner-occupied share | 79th | 388 |
| Work from home | 193rd | 307 |
| Travel time to work | 60th | 394 |
Sisco Heights's figures with every place in Washington (CSV)
Every place in Washington, sortable · Compare Sisco Heights 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 Sisco Heights?
18 of the 57 figures for Sisco Heights 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 Sisco Heights 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.