Top 3 states people move from to WA
California
Oregon
Texas
Overall, more than 248,000 people moved to Washington from another U.S. state in 2022. Nearly 50,000 came from California alone.

Data: Most new WA state residents in 2022 came via 10 states | Tri-City Herald
https://www.tri-cityherald.com/news/state/washington/article280955493.html