Attitudes on whether immigrants should culturally adapt to their receiving society or maintain the customs of their origin context vary – not only between majority and minority populations but also within these groups. Focusing on adolescents in the German context, this study investigates whether such acculturation attitudes are shaped by the ethnic composition of a person’s neighbourhood context. Building on arguments from theories of intergroup contact, concentration effects and reactive ethnicity, we expect different effects for minority and majority adolescents. To empirically investigate these expectations, we combine survey data on N = 4621 adolescents and their parents with geocoded information on the characteristics of their neighbourhood contexts. Exploiting an intergenerational set-up to account for neighbourhood selection, we find indication of neighbourhood effects among minority adolescents. Among majority youth, acculturation attitudes turn out to be unrelated to neighbourhood ethnic composition.