Auckland public libraries want to boost services to children and young people, particularly in poor areas in the city's south and west.
The decision follows a report which found that people in lower socio-economic areas borrowed from libraries less than those in well-off areas did.
The gap in income equality was growing and libraries, which had a role of making information equally available to all, must take this into account in their planning, said regional libraries and information manager Allison Dobbie.
She told Auckland Council members that consultants Sue Sutherland and John Truesdale found gaps in customer service levels for young people, Maori and Pacific Island residents and those with disabilities.
Improved materials and services were also needed for non-European speakers, with residents from Asia driving Auckland's population growth.