 For every 100 females age 18 and over, there were 104.6 males.There were 76,896 housing units at an average density of 2,794.4 per square mile (1,078.9/km2), of which 34,756 (47.5%) were owner-occupied, and 38,418 (52.5%) were occupied by renters.The homeowner vacancy rate was 1.9%; the rental vacancy rate was 4.9%.