Baltimore County has maintained its top bond ratings from the major rating agencies, county officials said Friday.

The county received AAA bond ratings from Fitch, Moody's and Standard & Poor's. The agencies pointed to factors including the county's manageable debt burden, conservative fiscal practices and a large, diverse tax base.

Less than 1 percent of counties in the country have AAA bond ratings from all three major rating agencies, county officials said. Favorable ratings help the county save money when it borrows. In a statement, County Executive Kevin Kamenetz said his administration would work closely with the County Council to "continue to demand that government be innovative, responsible and efficient."