The population in Smithfield was 9,495 in 2010, ranking it 56 among 326 places. This represents an increase of 2,234 from 7,261 in 2000. The largest minority group in 2010 in Smithfield was Hispanic/Latino, which accounted for 6 percent of the total population. Households with children under 18 made up 49.5 percent of all households in 2010, a decrease from 55.5 percent in 2000. Owner-occupied housing units accounted for 86.2 percent of all households in 2010, an increase from 2000 when 85.5 percent of all housing units were owner-occupied.