As of the census of 2000, there were 210,528 people, 88,413 households, and 62,507 families residing in the county.  The population density was 221 people per square mile (85/km²).  There were 102,830 housing units at an average density of 108 per square mile (42/km²).  The racial makeup of the county was 87.46% Race (United States Census), 8.31% Race (United States Census) or Race (United States Census), 0.33% Race (United States Census), 0.79% Race (United States Census), 0.04% Race (United States Census), 1.88% from Race (United States Census), and 1.18% from two or more races.  5.61% of the population were Race (United States Census) or Race (United States Census) of any race.. How many more housing units were there than households?