Mobile libraries have played a major role in reducing social isolation and constantly working to improve the quality of life of the community. One of the oldest bibliobus services in the Republic of Croatia was born in Međimurje County. This paper presents the publication of the terms of mobile libraries and other important features for the maintenance of the library service, which has a long tradition in Međimurje County. Encouraged by this information, I focused my work by directing myself to the mobile library; The Bibliobus of the Nikola Zrinski Čakovec Library and its qualities in their current modern form have proven the survey on the satisfaction of users of their services. The paper also gives a historical overview of the bibliobus service in Međimurje County, its development, significance and membership in today's society. Emphasis is also placed on activities and services provided only by the mobile library. In addition to the theoretical work, the papers dealing with the research were proven in the form of a survey inquiry on the satisfaction of users with bibliobus services, but also the employees themselves in the entire organizational library. The paper presents the results of user research in which the service library services of the City Library „Nikola Zrinski“ Čakovec are satisfied. The obtained results will serve as a further stimulus and backbone for which better bibliobus services will be useful for mutual satisfaction of both users and the same employees.