Abstract: There are three determinants of population size: births (fertility), deaths and movements in or out. The application of spatial autoregressive model indicate that general spatial model is adequate which the dependent variable (population) exihibits spatial dependence, the explanatory variables are significant and disturbances present spatial dependence. Box-jenkins model indicate that series will be differentiated twice to appear stationary. therefore spatial analysis helps authorities to develop effective intervention decisions, and indicate the factors that will be influenced in order to regulate the size of the population.