A further eight libraries across County Durham are due to reopen.
Durham County Council has already reopened 29 of its libraries since lockdown restrictions were introduced in March.
From Monday, Annfield Plain, Ferryhill, Willington, Horden, Pelton, Sacriston, Shotton and South Moor will also reopen.
Tracie Smith, Durham County Council’s Cabinet support member for transformation, culture and tourism, said: “It is fantastic to see more of our libraries reopening across County Durham.
"From Monday, 37 out of 39 libraries will have opened their doors to welcome back our customers and I’d like to thank our staff for their hard work in making this happen.
“Things may continue to look a little different because of measures in place to ensure customers can return to libraries safely, and some services are still not on offer. However, we are working hard to reintroduce as many well-loved features as we can as soon as possible.”
The only libraries not due to reopen are the community libraries at Esh Winning and Coundon because they are housed in a primary school and medical practice.