 For every 100 females age 18 and over, there were 100.2 males.There were 6,968 housing units at an average density of 133.1 per square mile, of the occupied units 4,202 (67.8%) were owner-occupied and 1,995 (32.2%) were rented.The homeowner vacancy rate was 4.5%; the rental vacancy rate was 12.7%.12,388 people (68.3% of the population) lived in owner-occupied housing units and 5,757 people (31.7%) lived in rental housing units.