This paper examines the issue of the size of a country and the implications for the survival of small states in the era of global change. The paper uses the multivariate statistical techniques of principal components analysis and cluster analysis to measure the size of a country and identify a group of small countries. It then examines the relationship between small size, viability and vulnerability in light of the challenges facing small states in a dynamic global economy. Given the constraints facing such small states, they have to establish strategic alliances with other countries and lobby international organizations in order to gain access to the resources needed to enhance the welfare of their citizens. They must also place greater emphasis on the development of their human resources.