10. Puerto Rico
Percent of urban population: 94
Between 1990 and 2000 Puerto Rican urban population increased from 71 percent to 94 percent of the total population. The rise of city dwellers, accompanied by the decline in rural population can be partly attributed to overall population growth and migrations from the countryside to cities. However, the methodology used to delineate urban and rural areas in Puerto Rico also played a significant role.
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