The institutional and legal framework of the Hellenic Statistical System - ELSS in combination with the huge number and complexity of the statistics produced by its stakeholders, requires full support from computing systems through the automation of the information retrieval and knowledge management. To this end, we will examine in this paper the possibility provided by the semantic web software tools. In particular, in order to model the field of ELSS, we developed an OWL-ontology using the Protégé, and present the search results on the data of the corresponding knowledge base that we created in parallel with the ELSS ontology.