Read this article and answer this question As of the census of 2010, there were 181,440 people, 67,499 households, and 43,536 families residing in the county.  The population density was 158 people per square mile (61/km²). There were 77,656 housing units at an average density of 69 per square mile (27/km²). The racial makeup of the county, as of 2008, was 83.2% Race (United States Census), 6.50% Race (United States Census) or Race (United States Census), 0.3% Race (United States Census), 1.7% Race (United States Census), 0.03% Race (United States Census), 2.15% from Race (United States Census), and 1.70% from two or more races.  7.6% of the population were Race (United States Census) or Race (United States Census) of any race. 19.2% were of Italian people, 16.8% Irish people, 15.5% Germans, 6.8% English people, and 4.7% United States ancestry according to Census 2000. 90.3% spoke English language, 4.5% Spanish language, 1.2% Italian language, and 1.0% German language as their first language.
How many more housing units were there than houses?
10157