Simplify the following text for a Grade 8 native English-speaking person.
Original: As of the census of 2000 , there were 58,779 people , 21,920 households , and 15,607 families residing in the county .
Simplified: As of the 2000 census , there were 58,779 people , 21,920 households , and 15,607 families residing in the county .