Chain Lake is a community in Snohomish County, Washington, home to about 4,950 people across 11 square miles. It has no ZIP code of its own: it’s part of 98290.
Homes sold for a median of $407 per square foot in the three months ending August 2026, a seller’s market.
Mostly Snohomish; part is in Chain Lake
Each card is that ZIP code’s whole market, including any part outside Chain Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Chain Lake’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Seattle–Tacoma International Airport (SEA)33 miles away |
|---|---|
| Closer regional airport | Seattle Paine Field International Airport (PAE)10 miles away |
| Nearest city of 250,000+ | Seattle, WA23 miles away |
Straight-line distances from the center of Chain Lake; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Chain Lake had 4,806 residents in the 2020 census, up 28% since 2010.
It’s the 197th largest of 628 towns in Washington by population.
Snohomish County grew from 23,950 residents in 1900 to 827,957 in 2020.
Snohomish County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 75°F in summer, and winter lows average 32°F. About 50.8 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Monroe, WA weather station (5 miles away).
283,649 jobs at 20,258 businesses in Snohomish County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
193 doctors and other health care providers list an office in Chain Lake.
Nearest hospitals
Providers with an office here
| Primary care doctors | 24 |
|---|---|
| Dentists | 24 |
| Nurse practitioners and physician assistants | 22 |
| Mental health providers | 73 |
| Physical and occupational therapists | 37 |
| Optometrists | 3 |
| Chiropractors | 10 |
| Pharmacies | 10 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (10 nearby)
Grocery stores
Pharmacies
Libraries (1 nearby)
Museums (1 nearby)
Theaters and performance venues
Counts are within about 2.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Snohomish School District, Monroe School District. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Central Primary CenterSnohomish | Pre-K | 69 | Public | 1.6 mi |
| Chain Lake Elementary SchoolSnohomish | Pre-K–5 | 434 | Public | 4.8 mi |
| Snohomish CenterSnohomish | Pre-K–12 | 37 | Special Education | 2.8 mi |
| Cascade View ElementarySnohomish | K–6 | 412 | Public | 3.2 mi |
| Central Emerson ElementarySnohomish | K–6 | 477 | Public | 2.1 mi |
| Dutch Hill ElementarySnohomish | K–6 | 694 | Public | 2.0 mi |
| Machias ElementarySnohomish | K–6 | 615 | Public | 7.1 mi |
| Parent PartnershipSnohomish | K–12 | 90 | Alternative Education | 2.3 mi |
| Riverview ElementarySnohomish | K–6 | 489 | Public | 4.1 mi |
| Centennial Middle SchoolSnohomish | 7–8 | 734 | Public | 5.1 mi |
| AIM High SchoolSnohomish | 9–12 | 174 | Alternative Education | 2.3 mi |
| High School Re EntrySnohomish | 9–12 | 40 | Alternative Education | 2.3 mi |
| Snohomish High SchoolSnohomish | 9–12 | 1,496 | Public | 2.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Kardia Classical SchoolSnohomish | Pre-K–8 | 30 | Christian (no specific denomination) | 4.4 mi |
| St Michael Catholic SchoolSnohomish | Pre-K–8 | 126 | Roman Catholic | 2.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Snohomish, Everett, Three Lakes, Fobes Hill, Bunk Foss, Monroe North, Lake Roesiger, Lake Bosworth and Machias.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.