@zailan3 Yes. I am in the UK and have an account back in the US that is joint with one of my parents. I believe I needed to have proof of address in the US to open the account.
@supescritter The US Alumni Club in the UK has occasional seminars on these subjects. There is one on Thursday:
https://www.usalumni.club/events/financial-planning-challenges-for-americans-living-in-the-uk-nov2020