There are many types of squirrel monkeys. The common and bare-eared squirrel monkeys dwell in central America. The black squirrel monkey ONLY dwells in Brazil, in South America. The Bolivian squirrel monkey thrives in Bolivia, South America. The red-backed squirrel monkey's habitat ranges in "south-western Costa Rica, and in Chiriqui and Veraguas provinces, northwestern Panama" Finally, the south-American squirrel monkey is found only in South America. In other words, the answer to your question is yes. The squirrel monkey is only found in southern, and central america. No North American squirrel monkeys have been discovered.