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