 For every 100 females age 18 and over, there were 94.0 males.There were 62,055 housing units at an average density of 1,175.7 per square mile (453.9/km2), of which 42,335 (71.1%) were owner-occupied, and 17,172 (28.9%) were occupied by renters.The homeowner vacancy rate was 1.4%; the rental vacancy rate was 6.0%.