Answer based on context:

As of the 2010 United States Census, there were 219,607 people, 88,296 households, and 58,814 families residing in Saratoga County.  The population density was 271 people per square mile (105/km²).  There were 98,656 housing units at an average density of 122 per square mile (41/km²).  The racial makeup of the county was 94.3% Race (United States Census), 1.8% Race (United States Census), 1.5% Race (United States Census) or Race (United States Census), 0.2% Race (United States Census), 0.0% Race (United States Census), 0.5% from Race (United States Census), and 1.7% from two or more races.  2.4% of the population were Race (United States Census) or Race (United States Census) of any race.

How many more housing units are there than households?
10360
In the passage, it is said that there are 98656 housing units and 88296 households. Therefore we could conclude that 98656 - 88296 = 10360 more housing unit than household.