This research studies the structure of migration within the province of Québec. An emphasis is placed upon the creation of a spatial typology. The principal objective of the article is to draw comparisons which demonstrates that, while quite different demo-graphically, counties can exhibit very similar migration structures. A matrix is constructed in order to investigate the basic properties of the areas of in and out-migration. The matrix examines the socio-demographic and socio-economic conditions of the counties in relation to their relative migration rates. Five hypotheses relating to the transformation of the agricultural sector, place of birth, level of unemployment, mean size of household and income level are studied. Finally, an elementary quantitative model is applied to the matrix to create a spatial typology of net migration in Québec. Classification is done in three steps : factor analysis, analysis of H-Groups, and cartographic representation of the results of the first two steps. Three types of relations were discovered for the variables, place of birth, unemployment rate and salary : 1 ) The « place of birth » variables show that positive net migration is quite high when the proportion of anglophones in a county is high. 2) The variable « unemployment rate » is associated with the variable « decline of rural population on farms » the latter being an indicator for the agricultural sector. 3) The salary criterion is a dominant factor in the migration field. In counties where the proportion of urban manpower is important, the salaries are higher. Also, these variables are closely related with net migration revealing clearly the attraction of migrants to regions where salaries are high.