Amit R. post in https://www.meetup.com/the-bay-area-clojure-user-group/ two weeks ago that he wants to resurrect the Clojure Meetup. He said he has a space in San Mateo downtown. I think he's one of the earlier Clojure meetup organizers, author of book Clojure in Action, if I remember correctly.
@amit964 is on this Slack but not in this channel. His company has (or used to have) an office in San Mateo and used to host meetups there. He was how I initially got into Clojure: he ran a Saturday "Intro to Clojure" workshop back in 2010 (for $199, as I recall). I think there was a follow-up workshop on macros, too, but my memory is a bit hazy (it was 16 years ago!).