Animorphs location?

I am a first time reader on book 15 and their location has seriously been bugging me. Since I’m currently reading I try to avoid searching through this sub as much as possible but I was curious if someone could let me know where they are.. In book 13 (I’m pretty sure) they mentioned Safeway and I’ve moved around the country a bunch so ik Safeway is mainly in the pnw and they’re within 2hrs of a coast so my best guesses so far have been Washington Oregon and California. I know they’re like hiding the location on purpose but I just can’t let it go it’s driving me nuts, do we ever find out where they are or is it forever a mystery?