CC BY 4.0Maja Stazić2025-09-302025-09-302025-09-30https://2025.ifla.org/https://repository.ifla.org/handle/20.500.14598/6819Croatian libraries are legally required to collect and report statistical data, which is processed nationally and made available to institutions, funders, and the wider public. However, traditional reporting formats often limit the interpretability and impact of this data. This poster demonstrates how Tableau, a user-friendly and powerful data visualization tool, can transform raw library statistics into meaningful, interactive insights. Using two key dashboards, the poster highlights the geographic distribution of public libraries across Croatia and the comparative scope of library collections by region. These visualisations reveal spatial trends, regional disparities, and opportunities for improved service delivery—valuable for advocacy, planning, and communication. The aim is to encourage librarians—even those without advanced technical skills—to explore Tableau as a tool for enhancing data transparency, storytelling, and decision-making. By adopting intuitive, visual methods, libraries can amplify the reach and relevance of their data at both local and national levels. Keywords: data analysis, visualisation of data, statistics, Tableau, public librariesenghttps://creativecommons.org/licenses/by/4.0/Data visualizationData analyticsStatisticsLibrary advocacyEvidencePublic librariesEvents MaterialMaja Stazić