Here's an idea: Check out
www.yorkie.meetup.com
I put in my zip code and found 3 meetups here in Maine! If there isn't already a group, start one! It's easy. You pick a place and a date and time, post it on meetup.com, and you're good to go! Lots of them seem to meet at pet stores, so you might want to check with one near you. Or a busy, nice park.
For what it's worth, my Higgins sure has enjoyed playing with Chihuahuas! There were 5 camping with the Wisconsin Chihuahua Rescue lady in Florida last winter and they took excellent care of Higgins as a baby. They weren't too rough. And of course, he just LOVES Princess, my grandpuppy Chihuahua.
So look for those little guys, too.