[2] The county was named for the southern Indian Nation whose chief was Bradford.

It was named after the Chickasaw tribe, which lived in the Southern United States at the time.

That building was enlarged in 1876, but a fire on March 26, 1880, destroyed it (townspeople managed to save the records).

[3] A brick/stone replacement structure was completed in 1881, and included a soaring clock tower.

The present structure, featuring Bedford stone, was built in 1929 and put into use in 1930.

This figure, however, was still relatively low compared to the problems faced by many other counties in the Midwest.

The population ranking of the following table is based on the 2020 census of Chickasaw County.

Trump won over 58% of the county's vote, turning in the best performance for a Republican since the 1952 landslide election of Dwight D. Eisenhower.

Trump further improved on this performance in 2020, taking nearly 65% of the vote and winning by a margin of over 31%, the best vote share and margin of victory for any candidate in Chickasaw County since the 1932 landslide election of Franklin D. Roosevelt.