Piggie Rescue in South Florida

Wildlife Care Center - Ft. Lauderadle

https://www.wildcare.org/

3200 SW 4th Ave, Ft Lauderdale, FL

(954) 524-4302

They may have guinea pigs for adoption there.

I've never adopted from there, I trek all the way up to Gainesville. It's worth the trip.

https://www.freewebs.com/gainesvilleguineapig

I've adopted two pigs from there and my MIL has adopted another.

you can try www.petfinder.com search, and also there is an adoptables section under classifieds. Check (broken link removed) classifieds, too, as well as looking at the page of rescues. I hope this helps you, and good luck! =)