Kelvin, Arizona
Kelvin is an unincorporated community in Pinal County, Arizona, United States. Kelvin is located near the Gila River, east-northeast of Florence.
The community was originally named Riverside; its name was changed to Kelvin, after Kelvin Grove in Scotland, in 1900. The railroad company later changed the name to Ray Junction on account of the development of Ray, Arizona, and it was the place where the railroad branched from the main line of the Arizona Eastern Railway heading up to the Ray mine. However the post office retained the name of Kelvin.
The Kelvin Bridge and the Mineral Creek Bridge, which are listed on the National Register of Historic Places, are located near Kelvin.
