 The U.S. Census defines the Columbia MSA as Boone, Cooper, and Howard counties while the addition of Audrain and Randolph form the combined statistical area.As of the census of 2000, there were 145,666 people, 56,930 households, and 34,010 families residing within the MSA.The racial makeup of the MSA was 85.83% White, 8.42% African American, 0.41% Native American, 2.76% Asian, 0.03% Pacific Islander, 0.67% from other races, and 1.87% from two or more races.