People also have access to 600,000 items through its SMART system, which allows users to borrow books from five other libraries in the lower North Island.
Mrs Green said that meant they could offer as many books as a bigger library such as the Wellington City Library.
Masterton's library has embraced other new technology such as self-issuing machines.
Mrs Green said there was a plan to have librarians out on the floor with wireless devices, possibly tablets, to help users.
Waiting in a long line to get out books could also become a thing of the past.
"Eventually we hope to issue the books out on the floor."