A methodology is developed that describes the spatial-temporal trends of economic welfare levels in a region. The focus of the region is assumed to be a key city; that is, a growth pole. The methodology depicts the degree of economic polarization on the pole as time and distance change. Two case studies, Halifax-Dartmouth and its hinterland the Province of Nova Scotia and Quebec City with a hinterland 160 miles in diameter were used to test the methodology. For the 30 year period 1941-1971, the nature of economic growth in the pole cities and their hinterlands and the pole-hinterland growth relationship were determined. Some conclusions regarding the requirements for improved regional welfare levels are offered. The methodology proves itself to be sufficient for the description of spatial-temporal trends in regional welfare levels. These descriptions are suitable for use in preliminary policy formulations and subsequent preliminary plan evaluation. / Thesis / Master of Arts (MA)