The income inequality and low income of families and individuals are themes for which statistical information is necessary for society in general, and, in particular, for public policy makers. In fact, it is essential to observe the economic situation of the population in order to make social policies capable of reducing inequality and improving the fate of those less fortunate. To this end, this publication mainly presents a collection of some one hundred detailed tables, and provides figures on the historical evolution of the indicators commonly used to measure income inequality and low income. The statistics in these tables are based on different units of analysis (family units or persons) and on various income concepts (after-tax income, market income or total income). Their universes are defined geographically (Québec, the provinces and Canada, the administrative regions and the regional county municipalities of Québec) and sociodemographically (age, sex, education level, labour market participation, main source of income and family type). The publication includes an analysis that shows the evolution of the indicators since the last three decades and a guide on the concepts and methods used.