Garfield is a city in Pawnee County, Kansas, United States. As of the 2020 census, the population of the city was 151. Garfield is named for Jam…Garfield is a city in Pawnee County, Kansas, United States. As of the 2020 census, the population of the city was 151. Garfield is named for James A. Garfield, the 20th President of the United States.