G.W.
Hi Kristi. welcome.
Yes, I had the same problem when I wanted to find some clients for tutoring. I asked at libraries, grocery stores, etc. but no one had the "community bulletin boards" and did not allow any for-profit postings.
I ended up doing Craigslist. Yes, it's creepy and I got a bunch of spam. BUT I did get one or two clients. I have since taken down my ad.
You could try the newspaper. Or, word of mouth. It's tricky around here! Good luck!