Sustainable library development stems from educational aspect of the United Nations Sustainable Development Goals (Goal 4). This paper examined funding, ICT use and sustainable library development. Descriptive survey research design was adopted for the study with a population of 222 respondents (professional librarians). Purposive and total enumeration sampling techniques were used for the study. Questionnaire was used for data collection. The descriptive statistical tools were used for data analysis. Three research questions guided the study. The study found that sustainable library development is a necessity for every library and that funding and ICT use play significant role in the actualization of sustainable library development. Funding bodies (government) and revenue from charges to users for individual services were found as the major sources of fund available for sustainable library development. The libraries should maximize income generation from sources such as philanthropic donations, leveraging, grants, and commercial activities rather than relying majorly on funding bodies, and revenue from charges to user for individual services. The libraries should ensure continuous use of ICT for sustainable library development.