The mission of the Nappanee Public Library as expressed by the Board of Trustees is to provide and actively promote access to resources for all people, regardless of their cultural background, viewpoint, gender, or educational level, so that individuals may improve the quality of their lives. To this end, the library provides print and non-print resources to meet the general educational, informational and recreational needs of its patrons.

The purpose of the library, as a public service agency, is to provide all residents of a library district with a comprehensive collection of materials in a variety of media that records humankind's knowledge, ideas, and culture, to organize these materials for ready access, and to offer guidance and encouragement in their use.