Cobb County has maintained its triple-A bond rating from all three rating agencies another year, keeping the top rating distinction going since 1997.

Cobb’s finance director Jim Pehrson announced the rating renewal Tuesday night. The top rating allows the county to borrow money at a low interest rate, specifically the short-term debts Cobb issues as temporary cash flow until tax revenues are collected.

Cobb is one of only 20 counties this year with a triple-A rating from Moody's, Standard & Poor's and Fitch rating agencies, Pehrson said.