Bicester's new library is to open on 11 April.
The facility will form part of Franklins House, the town's new £6.6m community building off Manorsfield Road.
The current Bicester Library, in Old Place Yard, will close on 19 March and staff will spend the following six weeks moving its stock to the new site.
Oxfordshire County Council said the new library will be larger and will have improved facilities.
Planned with Cherwell District Council, it is being funded by by developers as part of the expansion of Bicester town centre.
The library is planned to have more public computers, WiFi internet, regular activities, and Bicester Local History Society and National Careers Service will both have their own areas.
Lorraine Lindsay-Gale, county council cabinet member for cultural and community services, said it would be a "fresh, modern" facility.
The council said no items will be due for return while both libraries are closed and loan periods will be extended. Items can also be returned to any other Oxfordshire library.
Other plans for Bicester town centre include a hotel and shops, as well as office space and a restaurant.