Lake Cassidy
Census-designated place in Snohomish County, Washington

Lake Cassidy is an unincorporated community (census-designated place) in Snohomish County, Washington, with 3,757 residents (2020 Census). It sits at 371 ft (113 m) above sea level. The nearest town is Lochsloy, 2.0 miles E.
- 3,757residents (2020 Census)
- 371 ftelevation · 113 m
- 10.6 sq miland area · 27.4 km²
- 355 / sq mipopulation density
- 98258ZIP code
About Lake Cassidy
Lake Cassidy is a census-designated place (CDP) located in Snohomish County, Washington, United States. As of the 2020 census, Lake Cassidy had a population of 3,757.
Text: Wikipedia · CC BY-SA 4.0
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Living in Lake Cassidy
- Median household income
- $113,403
- Median home value
- $705,000
- Median rent
- $1,734/mo
- Median age
- 50.7
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Map of Lake Cassidy
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Open in Google Maps ›Lake Cassidy, WA population
Lake Cassidy had 3,757 residents in the 2020 Census.
| 2020 Census | 3,757 |
|---|---|
| Density | 355 per sq mi (137 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Lake Cassidy at a glance
| State | Washington (WA) |
|---|---|
| County | Snohomish County |
| Type | Census-designated place |
| Population | 3,757 (2020) |
| Land area | 10.59 sq mi (27.4 km²) |
| Water area | 0.21 sq mi (0.55 km²) |
| Elevation | 371 ft (113 m) |
| Coordinates | 48.0660° N, 122.0824° W |
| ZIP code | 98258 |
| Census code (GEOID) | 5337100 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Lake Cassidy
- Lochsloy2.0 mi E
- Marysville3.5 mi W
- Sisco Heights3.8 mi N
- Lake Stevens4.4 mi S
- Lake Bosworth4.8 mi E
- Machias5.3 mi S
- Granite Falls5.5 mi E
- Canyon Creek5.5 mi NE
- Cavalero6.3 mi S
- Bunk Foss7.2 mi S
- Arlington7.8 mi N
- Everett8.8 mi SW
Straight-line distance between town centers.
Frequently asked questions about Lake Cassidy
What county is Lake Cassidy in?
Lake Cassidy is in Snohomish County, Washington.
What is the population of Lake Cassidy, WA?
3,757 people lived in Lake Cassidy at the 2020 Census.
What is the ZIP code of Lake Cassidy, WA?
The ZIP code of Lake Cassidy is 98258.
What is the elevation of Lake Cassidy?
371 feet (113 m) above sea level.
What towns are near Lake Cassidy?
Lochsloy (2.0 mi), Marysville (3.5 mi), Sisco Heights (3.8 mi), Lake Stevens (4.4 mi), Lake Bosworth (4.8 mi).
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