 About 10.4% of families and 21.5% of the population were below the poverty line, including 18.7% of those under age 18 and 4.8% of those age 65 or over.Latah County has long been one of the most politically competitive counties in Idaho, while the state as a whole is strongly Republican.On January 3, 2017, the county had 21,723 registered voters; 10,629 (47%) are not registered by party, 6,965 (32%) are Republicans, 4,116 (19%) are Democrats, 290 are Libertarians, and 83 belong to the Constitution Party.