Using 1980 census and related demographic data of Taiwan, this study aims to analyze the relationships between demographic parameters and socio-economic development and their dimensions. The results of zero-order correlation and factor analysis show that closed relationships exist between areal characteristics. Three factors are extracted, namely, demographic processes and socio-economic development, population growth and socio-economic burden, and marital maladjustment and secondary industry. The result of one-way analysis of variance indicates that disparity exists among four planned regions. The study reveals some implications of policy.