Lake CassidyWA
A town of 3,292. Nearly 7.4% of it is conserved land.
What makes Lake Cassidy stand out
The 2 things Lake Cassidy does most differently from other towns.
Lake Cassidy has grown 10% since 2010
3,415 people in 2010; 3,292 today.
U.S. Census 2010 & 2020 · ACS
Lake Cassidy’s report card
Now in Lake Cassidy
What neighbors are saying. Town Square →
The data
Ordered by what stands out in Lake Cassidy. Another town gets a different order.
7.4% of Lake Cassidy is conserved land
1.6 miles of trails across 2 parks and preserves.
| Biggest places to walk | Trails | Acres |
|---|---|---|
| 1. Corson Natural Wildlife Area | 0.3 mi | 160 |
| 2. Hartford Field | — | 2 |
Healthier than 80% of U.S. towns
Lake Cassidy beats the Washington average on 2 of 26 CDC measures and trails it on 4.
| What stands out | Lake Cassidy | WA |
|---|---|---|
| Fewer uninsured adults | 6.7% | 8.4% |
| More adults getting cholesterol checked | 85.9% | 84% |
| More adults who have had cancer | 9% | 7.9% |
Most working residents commute out of Lake Cassidy
Most working residents leave Lake Cassidy for work: only 1% work in town. The top destinations are Everett (22%), Seattle (14%) and Marysville (7%). Half commute less than 17 miles.
Where working residents work
Mild winters, pleasant summers
Lake Cassidy has mild winters and cool summers, with plenty of rain. A typical July afternoon reaches 74°, a January night drops to 35°, and about 3 inches of snow falls in a normal winter.
Typical low → high °F
Moderate risk, with inland flooding at the top
Expected storm and flood damage is higher than in 45% of U.S. communities.
Homes in Lake Cassidy sell for about $950K
The median sale price was $950,000 in May 2026.
99% of working residents leave Lake Cassidy for work
Where Lake Cassidy’s working residents go each day. Line width shows the share.
Census LEHD 2023
About Lake Cassidy
CDP in Washington, United States
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.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Population
- 3,757
- Area
- 11 sq mi
- Elevation
- 371 ft
- Area code
- 360
Lake Cassidy’s neighbors
4 towns share a border with Lake Cassidy.