Nearly half of those who move from
developing countries reside in other
developing countries, usually one
that shares a border.5 Australia/New
Zealand and other Pacific countries,
North America and Western Europe
have the greatest share of international
migrants within their populations, while
Polynesia and Central America see
the greatest share of their residents
migrate abroad.6 Migration is often
equated with international movement,
but migration within countries, primarily
from rural to urban areas, accounts for
a much greater share of the movement
within human populations than
international migration.