[3] The county was named for Fredrika Bremer, a Swedish feminist writer.

[4] Bremer County is included in the Waterloo-Cedar Falls, IA Metropolitan Statistical Area.

[2] The population ranking of the following table is based on the 2020 census of Bremer County.

[13] As of the census[14] of 2000, there were 23,325 people, 8,860 households, and 6,326 families residing in the county.

24.70% of all households were made up of individuals, and 12.70% had someone living alone who was 65 years of age or older.

The Bremer County Court House, which opened in 1937, is listed on the National Register of Historic Places.

[15] The Bremer County Historical Society and Museum was originally built in 1862 as a stagecoach stop and hotel.

In 2016, Donald Trump became the first candidate of any party to win the county by more than 10% since the 1984 landslide reelection of Ronald Reagan, a feat he repeated in 2020 and 2024 with an increased vote share and margin of victory in each as well.