The main heritage collections for County Antrim is located in Ballymena Central Library.
The library is part of Libraries NI. The Northern Ireland Library Authority (Libraries NI) was established in April 2009 as a result of the Review of Public Administration. Libraries NI has the statutory responsibility for the provision of public library services in Northern Ireland. Its functions are laid down in the Libraries Act (Northern Ireland) 2008. It is a Non Departmental Public Body which reports to the Department of Culture, Arts and Leisure. The Board of the Authority consists of a Chairperson and 18 Members, 11 of whom are Councillors, within the meaning of the Local Government Act (Northern Ireland) 1972. All Board Members are appointed by the Minister of Culture, Arts and Leisure. The executive business of the Board is carried out by a team of officers under the leadership of the Chief Executive. The Executive Team is organised into three strategic units, each being led by a member of the Senior Management Team.