sentences:  Blackford County had 12,766 people, 5,236 households, and 3,567 families residing within its borders.The racial makeup of the county was 97.7 percent white, 0.4 percent black or African American, 0.2 percent Native American, 0.1 percent Asian, 0.3 percent from other races, and 1.3 percent from two or more races.Those of Hispanic or Latino origin made up 0.9 percent of the population.