Rozel is a city in Pawnee County, Kansas, United States. As of the 2020 census, the population of the city was 102. The first post office in Roz…Rozel is a city in Pawnee County, Kansas, United States. As of the 2020 census, the population of the city was 102. The first post office in Rozel was established in 1893. The community was named in honor of Roseila, the daughter of a businessman.