 The racial makeup of the county was 72.83% Non-Hispanic white, 6.24% Non-Hispanic black, 1.88% Native American, 4.06% Asian, 0.09% Pacific Islander, 0.07% Non-Hispanics of some other race, 2.78% Non-Hispanics reporting two or more races and 12.82% Hispanics.Politics

Whereas most of Arkansas was overwhelmingly blue up to the mid-2000s, Sebastian has been a solidly Republican county since Dwight Eisenhower won it in 1952.Since that election, no Democrat has ever again carried this county, though native son Bill Clinton came less than 300 votes of doing so in 1992.