PNW cities are pretty congenial to newcomers. We get 300 / month in our small county (and have been for 30 yrs).
WA is less 'nationalistic' / 'State proud' than OR, and Oregon is known for the Welcome to Oregon signs of Tom McCall (enjoy your visit, but don't stay).
Seattle would not know if you were new! but it is known for the Seattle FREEZE... (congenial, but not 'friendly' / warm.)
Tacoma, WA is military centric, so nearly everyone is from somewhere else.
from my experience of traveling and moving a lot... NE USA is very 'ingrown' with generations of 'locals' since the pilgrims! The rest of USA was 'settled' later. PNW being last.
Smaller / mid sized cities and towns that have a strong 'ethnic' root / history / businesses / land owners / employer base can be very restrictive to newcomers. (hint: if the local food is bratwurst and there is a Biergarten (or 6) on main street, then watch out!)
That is the case in several small towns near my TX home. I purposely chose a college town that is integrated / accepting of multiple cultures. (upon the advice of locals who had BTDT in the other towns nearby
).
This is quite near Austin (which itself if pretty 'open' to newcomers (out of necessity) )
My previous life in Colorado, was during an era of high growth and the use of
"NATIVE" Colorado license plates! It was NOT friendly to newcomers, but now that is mostly all who can afford (or stand) to live there. It is a political 'battleground state' (that is a bad sign... and creates insecurities / unrest with kids that have guns / adults with guns that act like kids ). When I was in HS in Colorado, we left our rifles in the rear window gun rack in our pickups (unlocked in school parking lot). That is no longer a very good idea! (and is now illegal).