This app was mentioned in 5 comments, with an average of 1.20 upvotes
I've used the app gamerlink in the past. That's how I got connected with my clan. Also you could try using xbox's lfg system. I've hooked up with some decent players on there
Android https://play.google.com/store/apps/details?id=gg.gamerlink.gamerlink
Apple https://itunes.apple.com/us/app/gamerlink-lfg-clan-chat/id974772739?mt=8
Honestly I don't think there's much of a site for this specific question, however you could always place an ad on Kijiji/Craigslist or something, but then you have to be careful of crazies.
I know there is an app called GamerLink (Google Play, App Store) trying to do something similar by holding a database of users who want to play certain games, but I don't believe it handles anything geographically.
https://play.google.com/store/apps/details?id=gg.gamerlink.gamerlink
Previously known as Moot
Is there a game buddy matching service/app?
No idea if this works: https://www.reddit.com/r/GamerPals/
But this has good opinions: https://play.google.com/store/apps/details?id=gg.gamerlink.gamerlink
Great idea - this sounds a little bit like Gamerlink, which is still in Beta.