I have heard things are sort of like that on the West Coast.
...
It's fairly apparent many areas are becoming increasingly inhospitable to the formation of Catholic families, and the liberalization of the SSPX is not helping at all.
That is right. I'm on the west coast.
I would point out though that (as I was Novus Ordo before discovering tradition) the non-SSPX are typically quite aged as well.
It would depend on neighborhood a bit, but I did 'parish-hop' and I saw *one* single woman of my age (20's at the time) and she was there visiting with her grandmother. I remember she made a point to talk to me when we bumped into each other a couple days later (she recognized me and I could not for the life of me place her until she asked if I attended the local parish). Anyway, she was hopelessly modernist. Catholicism was just a big group hug. Oh, and it had to fit into what she wanted (dress how you want, women work, wait to have kids to 'enjoy life' first, the Church needs to accept contraception, extremely bossy, etc). I spent maybe 20 minutes nodding and smiling and asking a question or two and felt like an animal ready to gnaw off its arm to get out of a trap.
But I digress...
I got extraordinarily lucky with my wife. She was open to tradition and we literally bumped into each other and struck up a conversation. I don't know how a young man in LA could find a trad wife if he wanted to. I recommend prayer. Again, it is what worked for me.
I also struggle to get by living in SoCal and try to afford housing and whatever children God gives us. It would be ideal to move, as California is lost (and will be an awful place to be during the chastisement) and lacks trads, or 'land' to 'get back to' (unless you are wealthy).
The chapels, independent or Society are quite a bit of older folks. Young families are sparse. And when I spot them they are usually travelling and not local. We definitely stick out. People essentially assume I'm wealthy or something because my wife has been pregnant or nursing the last 5 years (and is pregnant again by the way, thanks be to God). I don't have 5 kids, but 3 or more starts to get looks.
It is simply not possible for the average person to raise a large family here without living in a dangerous area or without a highly paid job. Living in a decent naighborhood with 3 or 4 kids is considered a luxury here, not normal.
I would move if I could do it all over again. I still may if job can make it happen.