Aims . The study is part of the pilot project “children in preschools” and aims to detect developmental risks of preschool children in the context of their socioeconomic status (SES) as a base to initiate individual intervention strategies. Methods . The “Dortmund Developmental Screening for the Kindergarten” was used in 12 preschools in Mecklenburg-Western Pomerania (MWP) to detect early developmental risks in children aged 3 to 6 years ( n = 870 ). Socioeconomic data from n = 530 parents were collected by a standardised questionnaire. Results . Significant differences between the SES groups were identified especially in the field of fine motor skills ( P 0.05 ). In gross motor development differences were not statistically significant. Prevalence rate of fine motor developmental risks ranges from 1.7% to 20.9%; the rate of gross motor developmental risks tops out at 14.4%. The prevalence rates are associated with age and sex. Conclusions . Fine motor skills in 3–6 years old preschool children are significantly associated with the socioeconomic status. In gross motor skills an association could not be identified. In this study, motor development was more affected by sex than by SES.