overpeopled
adjective
over·peo·pled ˌō-vər-ˈpē-pəld 
: containing more people than can be supported : overpopulated
Ireland, with half the population of fifty years ago, is still poor to the verge of famine, and is therefore still overpeopled.
Alfred Russel Wallace
Alfred Russel Wallace
Word History
First Known Use
1677, in the meaning defined above