Intergenerational mobility is lower in the United States than in Canada, but the border only partially distinguishes the two countries with mobility varying significantly within each. The within-country differences and similarities hint at some of the reasons why the United States has lower social mobility than many other rich countries.
This is the main theme of a study released by the National Bureau of Economic Research, based upon Canadian data my co-authors and I constructed with the cooperation of Statistics Canada. Our research offers a more accurate comparison between these two countries than any cross-country comparisons made in the literature to date: tax-based administrative data, used to define similar measures of income, and coming close to covering the total population of similarly aged young people and their parents.
We cluster more than 1,000 communities in these two countries—709 American Commuting Zones and 288 Canadian Census Divisions—into four broad regions according to their similarity across a comprehensive set of five different measures of intergenerational income mobility, all referring to the strength of the tie between parent incomes and child adult incomes.