There is no set time for an inmate to get transferred from county to state or federal prison. It sometimes has to do with bed space at the designated location, or it could be the transport detail is coordinated for the best budgetary concerns. If it's a few days or a few weeks, one morning, an officer will come to the inmate's cell unannounced and say, "Pack your stuff"... and then you're gone.
https://www.inmateaid.com/ask-the-inmate/how-long-does-it-take-before-and-inmate-is-transferred-from-county-to-prison#answer
Accepted Answer Date Created: May 05,2016