Simplify the following text for a Grade 8 native English-speaking person.
Original: As of the census of 2000 , there were 258,916 people , 106,755 households , and 74,621 families residing in the county .
Simplified: As of the census of 2000 , there were 258,916 people , 106,755 households , and 74,621 families living in the county .