The main purpose of this research is to identify the relationship between: Economic growth, environmental and demographic variables for a developing country. World Bank data are used for the period 1960-2016. The methodology is based on structural equations and a Vector Autoregressive (VAR) econometric model. Johansen cointegration and Granger causality tests were performed. The results show that the variables are cointegrated. There is a statistically significant long-term relationship between the proposed variables, in addition, oneway direction.