Using microdata sources available from the U.S. Census Bureau and Stat
istics Canada, this paper contrasts primary, return and onward migrati
on in the two countries. These classifications are based on informatio
n on the region (state or province) of birth and region of residence a
t the start and end of the census period. To study the propensities to
make a primary, return or onward migration, rates are calculated acco
rding to Long (1988) and compared with previous census periods. Analys
is reveals that both countries have experienced similar temporal patte
rns, and that primary, return and onward migration patterns tend to be
similar. Analysis using a nested legit model further reveals that ret
urn and onward migration in both countries can be similarly explained.