This paper sets out to examine the evolution that street use of Basque has undergone in Bizkaia between 1989 and 2006. In addition to general data, differences existing among the people of Bizkaia in different age groups are also analysed, in addition to the differences according to the number of inhabitants in a municipality as well as the level of Basque knowledge in the municipality in question. The second part of the paper is devoted to a reflection on the evolution that street use of Basque has undergone in Bilbao, when looking at differences according to age and gender. The last part of the paper deals with the influence exerted by the presence of children on the use of Basque by the inhabitants of Bilbao and the use of Basque in intergenerational relationships.