| Sisco Heights, Washington | |
| Settlement Type: | CDP |
| Pushpin Map: | Washington |
| Coordinates: | 48.1189°N -122.1075°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | Snohomish |
| Unit Pref: | US |
| Area Total Sq Mi: | 12.53 |
| Elevation M: | 137 |
| Population Total: | 3140 |
| Population As Of: | 2020 |
| Population Density Sq Mi: | auto |
| Timezone1 Dst: | Pacific |
| Area Code: | 360 |
Sisco Heights is a census-designated place (CDP) in Snohomish County, Washington, United States. It is located between Arlington and Marysville along State Route 9. As of the 2020 U.S. census, it had a population of 3,140 people.[1]
A post office called Sisco was established in 1902, and remained in operation until 1918.[2] The community has the name of an early settler.[3] Its school closed around 1925.[4]
The Sisco Heights CDP is 12.53sqmi.