Call your city pound and SPCA. I've checked in my city and they do recieve reptiles regularly. Most unfortunately are large snakes and iguanas that are soon euthanised. If you leave them your information along with the species that you would be able to rescue they will call you when it comes up.
Keeper of 5 snakes, leopard geckos, 1 green iguana, 20+ tarantulas, 2 dogs & a bunch of rats!