[4][5] In the Nebraska license plate system, Butler County is represented by the prefix 25 (when the license plate system was established in 1922, it had the 25th-largest number of vehicles registered of all counties in the state).

In 2010, Nebraska's center of population was in Butler County, near the village of Rising City.

[8] Butler was offered the job of Governor of Nebraska Territory in 1854 by President Franklin Pierce, but he turned it down.

[8] A second alternate explanation for the origin of Butler County's name is given in Andreas' History of Nebraska.

[17] As of the 2000 United States Census,[23] there were 8,767 people, 3,426 households, and 2,350 families in the county.

28.30% of all households were made up of individuals, and 14.40% had someone living alone who was 65 years of age or older.

No Democratic Party candidate has carried the county in any national election since 1976.