Calera is a town in Bryan County, Oklahoma, United States, And is part of the Dallas-Fort Worth combined statistical area. The population was 2,906 at the 2020 census, an increase of 34.2 percent over the figure of 2,164 recorded in 2010 indicating that Calera is experiencing larger growth than Durant and other surrounding areas. It is also part of the Durant Micropolitan Area, as well as being part of the Texoma region.