How old are the homes in Sisco Heights, WA?

Name: Age of homes in Sisco Heights, WA, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

24.1% (±9.6 points) of the homes in Sisco Heights, WA were built before 1980 (2020–2024 American Community Survey).

8.3% were built before 1940.

22.3% were built in 2010 or later.

Figures last updated on November 12, 2026.

Built before 1980: 24.1% (±9.6 points)
Built before 1940: 8.3%
Built 2010 or later: 22.3%

When the homes in Sisco Heights were built

Housing units by year structure built, 2020–2024
Year built	Sisco Heights	Snohomish County	Washington	United States
2020 or later	15.2% (±6.1 points)	2.6%	2.3%	2.0%
2010 to 2019	7.1% (±3.7 points)	12.2%	12.1%	9.4%
2000 to 2009	22.3% (±6.7 points)	17.6%	15.1%	13.6%
1990 to 1999	21.2% (±6.8 points)	18.0%	14.8%	12.4%
1980 to 1989	10.0% (±4.2 points)	15.0%	12.4%	12.9%
1970 to 1979	9.3% (±6.4 points)	13.1%	14.2%	14.2%
1960 to 1969	5.6% (±4.1 points)	9.8%	8.7%	9.9%
1950 to 1959	0.5% (±0.8 points)	5.0%	6.7%	9.5%
1940 to 1949	0.4% (±0.8 points)	1.9%	4.2%	4.4%
1939 or earlier	8.3% (±5.7 points)	4.9%	9.6%	11.7%

In Sisco Heights, the share of homes built before 1980 is lower than in Snohomish County (34.7%).

It is also lower than in Washington (43.4%).

It is lower than the national figure (49.7%).

In Snohomish County, Sisco Heights ranks 38 of 55 places with a published estimate, from highest to lowest share of homes built before 1980.

Statewide, it ranks 407 of 472.

Rankings use the estimates alone; where margins of error overlap, neighboring ranks may not truly differ.

Why the age of a home matters: lead-based paint

Federal law treats housing built before 1978 as likely to contain lead-based paint.

Before a lease or sale of most pre-1978 housing, the landlord or seller must disclose any known lead-based paint and hazards and give the tenant or buyer the EPA pamphlet (42 U.S.C. § 4852d; 40 CFR part 745, subpart F; 24 CFR part 35, subpart A).

A contractor paid to renovate, repair or paint a pre-1978 home must be a certified firm, use a certified renovator and follow lead-safe work practices under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E) whenever the job disturbs more than 6 square feet of painted surface in a room or more than 20 square feet outside; window replacement and demolition always count (40 CFR 745.83).

Certification comes from EPA, or from the state where EPA has authorized the state to run the program.

The Census Bureau groups construction by decade, so the share built before 1978 lies between the share built before 1970 (14.8%) and the share built before 1980 (24.1%).

Homes built before 1980 in places near Sisco Heights

Nearest places with a published estimate, compared with Sisco Heights
Place	Distance	Homes built before 1980	Compared with this place
Sisco Heights	—	24.1% (±9.6 points)	—
Marysville	3.3 mi	31.6% (±2.3 points)	Not measurably different
Lake Cassidy	3.8 mi	34.5% (±11.1 points)	Not measurably different
Arlington	4.0 mi	22.3% (±4.4 points)	Not measurably different
Lochsloy	5.1 mi	25.2% (±8.5 points)	Not measurably different
Canyon Creek	5.9 mi	21.7% (±10.4 points)	Not measurably different
Granite Falls	6.8 mi	15.0% (±6.6 points)	Not measurably different
Arlington Heights	6.9 mi	32.3% (±16.6 points)	Not measurably different
Lake Goodwin	7.7 mi	26.5% (±7.2 points)	Not measurably different

None of the nearby places differs measurably from this one on this figure.

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes built before 1980 across Snohomish County, place by place

Rank	Place	Homes built before 1980
32	Lake Goodwin	26.5% (±7.2 points)
33	Gold Bar	26.4% (±11.0 points)
34	Sultan	25.7% (±12.9 points)
35	Martha Lake	25.4% (±4.6 points)
36	Bothell West	25.3% (±4.4 points)
37	Lochsloy	25.2% (±8.5 points)
38	Sisco Heights	24.1% (±9.6 points)
39	High Bridge	23.6% (±7.8 points)
40	Lake Stevens	23.2% (±3.1 points)
41	Arlington	22.3% (±4.4 points)
42	Monroe	22.1% (±4.1 points)
43	Canyon Creek	21.7% (±10.4 points)
44	Three Lakes	20.2% (±8.4 points)

Showing 13 of 55 places in Snohomish County, ranked from highest to lowest.

Sisco Heights is a census-designated place: an unincorporated community the Census Bureau draws for statistics, with no municipal government of its own.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Sisco Heights

How old are most homes in Sisco Heights?

24.1% of homes in Sisco Heights, WA were built before 1980 (2020–2024 American Community Survey).

Do homes in Sisco Heights need a lead paint disclosure?

A home built before 1978 does, before it is rented or sold, unless an exemption applies (42 U.S.C. § 4852d); between 14.8% and 24.1% of homes in Sisco Heights were built before then.

Does a contractor need lead certification to work on older homes in Sisco Heights?

Yes, when the job disturbs more than 6 square feet of paint in a room or 20 square feet outside, or replaces a window: the firm must be certified and a certified renovator must direct the work under the Renovation, Repair and Painting Rule (40 CFR part 745, subpart E).

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Sisco Heights CDP, Washington

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Sisco Heights CDP, Washington (place:64610, in state:53).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0017PE, DP04_0017PM, DP04_0018PE, DP04_0018PM, DP04_0019PE, DP04_0019PM, DP04_0020PE, DP04_0020PM, DP04_0021PE, DP04_0021PM, DP04_0022PE, DP04_0022PM, DP04_0023PE, DP04_0023PM, DP04_0024PE, DP04_0024PM, DP04_0025PE, DP04_0025PM, DP04_0026PE, DP04_0026PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.