As of the 2010 U.S. Census, there were 113,934 people, 20,502 families, and 47,060 households residing in the city. The population density was 4,093.9 people per square mile (1,580.7/km²), making it less densely populated than Detroit proper and its inner-ring suburbs like Oak Park, Michigan and Ferndale, Michigan, but more densely populated than outer-ring suburbs like Livonia, Michigan and Troy, Michigan. The racial makeup of the city was 73.0% White (U.S. Census) (70.4% non-Hispanic White), 7.7% Race and ethnicity in the United States Census, 0.3% Race and ethnicity in the United States Census, 14.4% Race and ethnicity in the United States Census, 0.0%  Race and ethnicity in the United States Census, 1.0% from Race and ethnicity in the United States Census, and 3.6% from two or more races. Race and ethnicity in the United States Census or Race and ethnicity in the United States Census residents of any race made up 4.1% of the population. Ann Arbor has a small population of Arab Americans, including  students as well as local Lebanese Americans and Palestinian Americans.
Question: How many more families are there than people per square mile?
Answer: 16408.1