The Muria pre-adolescent children (6-10 years) were studied in terms of growth differentiation and impact of bio-cultural factors. Present study consists of 423 children, who were measured for weight, height, sitting height, bi-acromial diameter, bi-iliac diameter and mid-upper arm circumference. Means of different measurements increase in all ages with advancement of age. Present study reveals a sharp pre-adolescent growth spurt between 7 and 8 years as well as 8 and 9 years among boys and between 6 and 7 years, 8 and 9 years and 9 and 10 years among girls. All the mean values of weight and height are much lower than NCHS reference. Findings of the present study neither support the European data nor the findings from different parts of India. While, body weight increases with increase in parity, weight gain is more in nuclear families than joint families. Sitting height is more in small size and nuclear type family. Parental education, however, did not show any considerable impact on pre-adolescent growth characteristics among the Muria.