Jerome is a city in and county seat of Jerome County, Idaho, United States. The population was 10,890 at the 2010 census, up from 7,780 in 2000. The city is the county seat of Jerome County, and is part of the Twin Falls Micropolitan Statistical Area. It is the second largest city in Idaho’s Magic Valley region, second only to Twin Falls which is located 10 miles southeast. Jerome's economy is largely agrarian with dairy farming being one of the main driving forces of the economy.
At the 2010 census there were 10,890 people, 3,693 households, and 2,640 families living in the city. The population density was 1,972.8 inhabitants per square mile (761.7/km2). There were 3,985 housing units at an average density of 721.9 per square mile (278.7/km2). The racial makeup of the city was 78.3% White, 0.4% African American, 1.8% Native American, 0.4% Asian, 0.1% Pacific Islander, 16.7% from other races, and 2.2% from two or more races. Hispanic or Latino of any race were 34.3%.
Of the 3,693 households 45.1% had children under the age of 18 living with them, 49.6% were married couples living together, 13.6% had a female householder with no husband present, 8.3% had a male householder with no wife present, and 28.5% were non-families.