Bibliobuses or mobile libraries are one of the essential segments in the extensive network of public libraries currently operating in Koprivnica-Križevci County. The Franjo Marković City Library in Križevci was fundamental in implementing mobile library services in the county, as it possessed material and professional resources, along with an appropriate geographical position, to deliver bookmobile services. This provided access to library services for the municipalities that do not have stationary libraries, such as Sveti Ivan Žabno, Sveti Petar Orehovec, Kalnik, and Gornja Rijeka, but it also included several remotely located settlements in the City of Križevci. Written on the 15th anniversary of the Križevci bibliobus service, this paper provides an overview of its development, current status, purpose, services, and results. Particular emphasis is given to the contribution to the availability of library services across the Kalnik foothills and the Bilogora slopes. The introduction outlines the legal framework for the establishment of the bibliobuses, their role, and benefits, followed by a brief overview of the current state of mobile libraries in the Republic of Croatia. In addition to the theoretical part, the paper includes research conducted through a survey questionnaire on a sample of 100 respondents aimed at assessing user satisfaction with bibliobus services. In conclusion, the paper presents research results detailing possibilities for improving existing services based on users' expectations, recommendations, and needs.