O.C.G.A. § 17-12-34: Pro rata sharing of expenses and resources by counties in each circuit.

The governing authority of the county shall provide, in conjunction and cooperation with the other counties in the judicial circuit and in a pro rata share according to the population of each county, appropriate offices, utilities, telephone expenses, materials, and supplies as may be necessary to equip, maintain, and furnish the office or offices of the circuit public defender in an orderly and efficient manner. The provisions of an office, utilities, telephone expenses, materials, and supplies shall be subject to the budget procedures required by Article 1 of Chapter 81 of Title 36.