Brownell is a city in Ness County, Kansas, United States. As of the 2020 census, the population of the city was 23. Brownell was a station on t…Brownell is a city in Ness County, Kansas, United States. As of the 2020 census, the population of the city was 23. Brownell was a station on the Missouri Pacific Railroad. The community was named for Mr. Brownell, a railroad official.