Abstract: The aim of this study was to explore association between economic differences and nutritional status of children living in Ardebil urban areas. In a descriptive cross-sectional study, 698 preschool children (346 males, 352 females) at 6 years old from different regions of Ardebil city (Iran) were selected by a multi stage sampling method. Variables such as age and anthropometric factors (height, weight and BMI) were measured. The results showed that the mean values for height, weight and BMI were less than NCHS standards. There has been no severe malnutrition among the subjects studied. However, mild (31.6%) and moderate underweight (7.9%) were observed. Similarly, no severe stunting cases were observed; however, 17.2 and 1.4% of the cases were suffering from mild and moderate stunting, respectively. Mild and moderate wasting rates were found to be 25.5 and 0.9%, respectively. Based on BMI for age, 2 and 4% of children were overweighed and being at the risk of overweight, respectively. Significant associations were observed between birth weight and BMI and weight. There was a significant difference between height and family`s monthly income. Height of the children was significantly higher in objects living in private homes compared to rental homes (p<0.05). No significant association was observed between anthropometric factors and birth ranking, mother education and employment status. The lack of severe malnutrition implies that the growth status is acceptable among children at 6 years old, although it was lower than the NCHS standards. However, economic status may affect long term growth of the children.