According to the census of 2010, there were 1,024,266 people, 320,766 households, and 183,798 families residing in the county.  The population density was 1034 persons per square mile (387/km²).  There were 335,881 housing units at an average density of 340 per square mile (131/km²). The racial makeup of the county was 68.21% White, 9.26% Black or African American, 0.58% Native American, 4.47% Asian, 0.07% Pacific Islander, 14.56% other races, and 2.85% from two or more races.  28.20% of the population were Hispanic or Latino of any race. English is the sole language spoken at home by 71.42% of the population age 5 or over, while 22.35% speak Spanish language, and a Chinese language (including Mandarin Chinese, Taiwanese Minnan, and Yue Chinese) is spoken by 1.05%. As of the 2010 census, there were about 11.1 Same-sex relationship per 1,000 households in the county.
Question: How many more housing units are there than households?
Answer: 15115