Cultural and socioeconomic differences in children's perceptions of their peers as being typical members of the cis gender group were examined in a cross-sectional sample of 351 girls (N = 164) and boys from 19 fifth- and sixth-grade classrooms (M age = 11.5) in three primary schools in Montréal (N = 156) and two schools in Barranquilla. Multilevel modeling indicated that: (a) the overall level of perceived typicality was low; (b) boys perceived other boys to be more typical than girls, whereas girls perceived girls and boys to have the same level of typicality; (c) in Barranquilla perceptions of gender typicality were higher among upper-middle-class children than among lower-middle-class children, whereas no difference was observed with the children from Montréal.