It's pretty much just a house-decorating thing over near where I live. A couple people decorate their houses but not many. I, personally, haven't seen a trick-or-treater come to the house in the 10+ years I've been living here, but to be fair I'm usually at work part or most of the day and I've been told there's been a couple. I hardly ever even see people walking the streets in costume anymore.
Truth is, adults co-opted Halloween a long time ago and turned it into an excuse for people to dress up, get drunk, and have sex with casual acquaintances. It's pretty much a completely different thing than it was when we were kids. Which is probably why it's not treated like a big deal anymore. Less of a celebration of the macabre, and more of a fancy-dress bacchanal.
Honestly, I'm debating whether or not to "celebrate". The last few years I've been way too lazy/cheap to put another costume together, so all we ever do is I put on my Superman outfit and take some pictures. And that's fine but it's like 5 years in a row. I've wanted to put a Batman one together but it's more time and money than I felt like spending and I would've needed to start assembling it a while ago already.
I don't know if I'm even gonna wear the Superman suit. I can't go to the gym so in spite of my best at-home efforts to stay in shape, I've shrunk quite a bit. I have too much respect for what the suit means to simply throw it on if I'm not gonna look good in it. I know that's a personal hang-up but it's how I feel, anyway.
So yeah, I'unno, we might just watch movies.