Puerto Rico's population is around 3 million, less than a percent of the 331 million population of the US. I wouldn't expect more than a slight change to the graph either way.
Right now most of the Bay Area is barely to the south of the median, so I suspect the 2030 update won't change much there. As far as east-west goes it looks like it's in the middle of Chicago right now (which also helps explain why 2010-2020 didn't move that far west).
Just noting that since the Bay Area's pretty heavily populated, bringing in Puerto Rico (shifting the US median south by ~1.6 million people) takes the median from say Napa's latitude to, say Alameda's latitude (keeping in mind that there's also Louisville KY and other smaller non-SFBA towns in the same band of latitude).