This paper discusses open data, information that the government must publish across web pages. This information must be published in an open and machine-readable format so that users can reuse it. Open data portals present on both a European and national level enable the accessibility of public authority data. The reuse of data within the European Union is regulated through the Directive on open data and the reuse of public authority data, and the Croatian legislation implemented the regulations through the Act on the Right of Access to Information. The open data policy of the Government of the Republic of Croatia advocates the creation of new social and economic values through the use of public authority data. Facets of administration, state assets, and veteran administration in Croatia are examined to get data bundle analyses of registries, databases, logbooks, and records maintained by the relevant ministries and central state offices. The comparison of the gathered data with the Analytical report on monitoring the application of the Act on the Right of Access to Information nr. 6/2016 enables us to discern that positive changes in data publishing have occurred in the facets of administration and state assets, while the veteran administration shows stagnation.