The expansion is the biggest since becoming an independent unit of Alphabet Inc in 2015.
It will target 22 metro areas across the US starting 17 today, and the locations were based on where the company found speed delays.
In a statement, Dinni Jain, CEO of Google Fiber, said: “We are excited to once again expand our geographic reach – bringing better internet to more people in more places.
“Stay tuned in the coming months as we fill this picture with more details about our new cities, even faster speeds and redefined customer service.”
The company, which was founded in 2010, aimed to bring FTTP to the United States, with its first location being Kansas City. It aimed to offer similar services in Texas, Atlanta and Nashville over the next two years.
However, in 2015 Google underwent a restructuring and its expansion plans were put on hold.
In June of this year, the company said it had embraced the open access model for broadband, citing the West Des Moines project and its partnership with the Huntsville, Alabama utility as examples.
Jain added that he would like to help communities build their own fiber networks.
“We’ve seen this model work effectively in Huntsville and West Des Moines, and we’ll continue to look for ways to support similar efforts,” he added.