"Where do most Americans in Latin America live? '
Because South AMERICANS live in South America, Central AMERICANS live in Central America, and North AMERICANS live in North America.
Having lived in South America for a large part of my adult life, I found that educated Latin AMERICANS object to U.S. citizens classifying themselves as the ONLY AMERICANS in the hemisphere.
But we get that you are asking about U.S. citizens -- top of the head would indicate that Mexico leads the list.
--For example, from Google link below ----
Some might think Mexico is a little too close to home, but that’s also what makes it so convenient for Americans. In fact, Mexico undoubtedly houses more American expatriates than any other country in the world. Combined with the low cost of living and the intense familiarity of the culture to any American from the Southwestern United States, Mexico makes a cozy destination for the weary yankee.
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Costa Rica has perhaps the most stable government in Central America, and since it’s been premised upon a proven democracy for at least the last 60 years, things are run there in a familiar way for Americans. That might be what makes Costa Rica one of the most popular destinations in the world for American expatriates. It doesn’t hurt that it’s not too far away from home either, not to mention the low cost of living.
In fact, if you’re ever feeling lonely, there’ll never be a shortage of Americans on vacation to remind you of home.
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With Brazil’s burgeoning worldpower economy and the steady need for english teachers, it’s become a favorite location for American expats. That stable economy means jobs, and the cost of living in Brazil is still fairly low. The culture is diverse, yet remarkably friendly to Americans, and it’s another country with just the right mix of exoticism and familiarity.
Compared with most other South American countries, it’s easier to get around here speaking only english.
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First and foremost, Buenos Aires made our list for one of the cheapest cities in the world for American expats to live in. That gives this beautiful, diverse, and inexorably friendly country major props on this list too. Among South American countries, getting around here speaking English is relatively simple, and the cultural wealth is the only thing that matches its landscape.
Argentina is receptive to Americans. It’s a top location for students, and the standard of living relative to the cost of living is unmatched. There’s no surprise why American expats are flocking here, and we recommend you do the same. Argentina strikes just the right balance among all the things considered among this list.
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Link below has lots of information about U.S. citizens living in the region, bloggers, and other links. Might lead you to contacts that will be helpful in your project.
http://www.google.com/search?q=u.s.+expatriates+latin+america&sourceid=ie7&rls=com.microsoft:en-US&ie=utf8&oe=utf8&rlz= Good luck and welcome to the Latin American Forum.