| Lake Cassidy, Washington | |
| Settlement Type: | CDP |
| Pushpin Map: | Washington |
| Coordinates: | 48.0661°N -122.0825°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | Snohomish |
| Unit Pref: | Imperial |
| Area Total Km2: | 27.9 |
| Area Land Km2: | 27.4 |
| Area Water Km2: | 0.6 |
| Area Total Sq Mi: | 10.8 |
| Area Land Sq Mi: | 10.6 |
| Area Water Sq Mi: | 0.2 |
| Elevation M: | 113 |
| Population Total: | 3,415 |
| Population As Of: | 2010 |
| Population Density Km2: | auto |
| Timezone1: | Pacific |
| Area Code: | 360 |
Lake Cassidy is a census-designated place (CDP) located in Snohomish County, Washington, United States. The population was 3,415 at the 2010 census.
The population of Lake Cassidy was 3,415 at the 2010 Census. 1,880 people are male. 1,535 are female.[1]
Lake Cassidy is located at coordinates 48.0661°N -122.0825°W (48.066044, -122.082433).[2] The elevation is 371 feet.
According to the United States Census Bureau, the CDP has a total area of 10.8 square miles (27.9 km²), of which, 10.6 square miles (27.4 km²) of it is land and 0.2 square miles (0.6 km²) of it (1.98%) is water.