This study aimed at investigating the urban growth pattern of Nonthaburi Municipality from 1975 to 1991, and analyzing factors contributing to such growth. The findings were also manipulated to predict the future growth trend of this municipality. It was hypothesized that the urban growth of Nonthaburi Municipality would conform to Sector Model Theory. Data from documents, maps and interviews of 241 households were analyzed in terms of percentage and presented in the form of maps and description. The findings of this study indicated that the land use patterns were varied. However, residential and commercial uses were identified as the major types of land use. Urban growth occurred along both sides of the main roads. The urban structure in 1975 was in accordance with the Concentric Zone Model, but in 1991 it was found to fit the Sector Model. Business areas and residential areas for the rich were close to the core area of the municipality. An outstanding characteristic of Nonthaburi's urban growth was the residential use of land along main roads. Factors contributing to the urban growth of Nonthaburi Municipality, in order of importance, were physical factors, economic factors and infrastructure.
