Libaries in Brackley and Towcester now offer free wifi regardless of membership.
This week Northants County Council announced it was rolling out the service to all of its 36 libraries.
As well as the libraries, Wi-Fi is also now available at Brixworth Country Park and at the Record Office in Northampton.
People can access the Wi-Fi themselves using their own devices, such as mobile phones, iPads and laptops.
As well as adding to the wide range of services already offered to customers, the Wi-Fi also improves the conference and meeting facilities available in these locations.
The Wi-Fi project was supported by councillors who donated money through the Empowering Councillor scheme.
Deputy leader and cabinet member for customers and communities Councillor Heather Smith said: “The addition of Wi-Fi has already had a big impact for our customers. It has been used to help deliver conferences, access computer courses, conduct research and get involved in social networking, to a name just a few examples.
“Wi-Fi is part of the modern world and it’s something that people expect to be able to access in as many places as possible and it is particularly useful during our job clubs, Enterprise Hubs events and other careers and business start-up activities.
“By making it easier than ever for our customers to go online, we are better able to equip people with the necessary skills to learn more about their own devices and how to get online, connect with their communities and help themselves.”
The current Wi-Fi contract is for one year and following a competitive tender process, was awarded to Kettering-based business T James Telecoms Ltd.