The Knowledge society is based on the growing importance of the service sector in the whole economy. Knowledge intensity and technology intensity variables make up a range of services showing differential characteristics such as the geographic concentration level of these sectors. In the present article we analyse the concentration trends in knowledge and high technology intensive sectors, taking into account variables such as the number of companies, employment and wages and salaries.La sociedad del conocimiento se basa en la creciente importancia del sector servicios. Las variables de intensidad de conocimiento e intensidad tecnológica conforman una serie de servicios que presentan unas características diferenciales, como es el grado de concentración de estos sectores a nivel geográfico. En el presente artículo se analizan las tendencias de concentración en España en sectores intensivos en conocimiento de alta tecnología, teniendo en cuenta las variables de número de empresas, número de ocupados y salarios.The Knowledge society is based on the growing importance of the service sector in the whole economy. Knowledge intensity and technology intensity variables make up a range of services showing differential characteristics such as the geographic concentration level of these sectors. In the present article we analyse the concentration trends in knowledge and high technology intensive sectors, taking into account variables such as the number of companies, employment and wages and salaries.