Snohomish County, WashingtonSkykomish Rivereastbound on U.S. Route 2
westbound on U.S. Route 2
- Index, Washington (Wikipedia)
Index (Lushootseed: x̌əx̌aʔusalʔtxʷ) is a town in Snohomish County, Washington, United States. The population was 178 at the 2010 census.