Bremen is a census-designated place (CDP) in Marshall County, Kansas, United States.

[4] The 2020 United States census counted 51 people, 17 households, and 16 families in Bremen.

5.9% of households consisted of individuals and 5.9% had someone living alone who was 65 years of age or older.

[6] The 2016-2020 5-year American Community Survey estimates show that the median household income was $58,750 (with a margin of error of +/- $15,444).

The community is served by Marysville USD 364 public school district.