International Journal of Library and Information Studies Vol.10(1) Jan-Mar, 2020 ISSN: 2231-4911 http://www.ijlis.org 18 | Page Utilization and User Satisfaction of Public Library: A Study of Herbert Macaulay Library, Lagos State-Nigeria. Olalekan Moses Olayemi Library and Information Technology Department, Nigerian Institute of Medical Research Lagos, Nigeria. E-mail: Lekus2000@yahoo.com Abstract - This study surveythe utilization and user satisfaction of Herbert Macaulay library, Lagos State, Nigeria. The study adopted surveydesign and data were collected using self-developed questionnaire that was administered randomly to the users of the library. The collected data were arranged, coded, tabulated using tables and percentages, and analyzed using SPSS version 21 for Windows. The study found out that, most of the library users are youth and young adults.The study also revealed that the respondents indicated visiting the library frequently for the purpose of general reading, followed by research work, career, recreation/entertainment, to get help always, socialize to meet friends, and to use the internet. The findings also shows that majority of the respondents indicated that the attitude of the library staff influence their visit to the library, and were generally satisfied with the resources and services rendered by the library. Therefore, it was recommended that, sincethe clientele of the library cut across all categories ofusers from the society, the library should endeavor to continually provide information resources and services that meet the different categories of users’ needs. Keywords: User studies, Public libraries, Herbert Macaulay Library, User Satisfaction, Utilization. Introduction The public libraries are generally refers as the ‘people’s university’ and are considered as leading agents of social,political, educational, and cultural change in any given society because they provide wide range of readership than any other type of library. As a rule they are usually established by law and supported with public fundeither through the community, local, state or national government.Public libraries are seen as essential to the individual as well as communities they serve in general. Without any argument, public library has become a learning centre where people can take part in learning activities, discuss and share knowledge and information. The responsibility of the public library is to ensure access of information for “the community regardless of race, nationality, age, gender, religion, language, disability, economic, employment status and educational attainment" (IFLA/UNESCO, 2001, p.1).Therefore, public library is meanttoserve its users at no cost at any point in time and to do this effectively, there should be “quality information in terms of relevance, currency and accuracy that would meet and satisfy user’s needs” (Ikenweand Adegbilero-Iwari, 2014, p.2). The focus of the public library iscommonly service-oriented. Theyprovide access to information through wide range of resources, operations and services.“The main function of public library in Nigeria is the provision of information contained in books, newspapers, magazines, journals, audio-visual, and electronic resources to users according to their