The goal of this research was to examine the state of primary school libraries in Vukovarsko-srijemska županija. School libraries are a key part of the education system and of every school institution and as such probably represent the first time students encounter libraries and the reading culture. The work of libraries is evaluated through a number of objective indicators which measure the equipment of the library, the expertise of the staff and similar data. The method used in this research is documentation analysis and comparison with results of previous research. In the research from 1999. it was established that the condition of primary school libraries in Vukovarsko-srijemska županija, especially the financial condition, was extremely bad, which was probably due to war damages in this area. The condition was significantly recovered by 2010. Holdings were enriched, libraries were expanded and better equipped and the staff became better educated. There weren't any significant changes from 2010. to 2015. and the rehabilitation of libraries slowed down. The analysis showed that many indicators stagnated, but one positive change was the increase in expertise of library staff. Furthermore, this research shows that the condition of primary school libraries in Vukovarsko-srijemska županija is still under the required level, because Istarska županija which is similar in size and number of habitants and students has more developed primary school libraries according to several indicators. This research shows unequal regional development using primary school libraries as an indicator, and points at the need for investments in the educational system in Vukovarsko-srijemska županija.