Udell is a city in Appanoose County, Iowa, United States. The population was 28 at the time of the 2020 census. History Udell was founded in 1895. It was named for Dr. Nathan Udell, a pioneer settler. Geography Udell is located at (40.780199, -92.741393). According to the United States Census Bureau, the city has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 47 people, 21 households, and 13 families living in the city. The population density was . There were 26 housing units at an average density of . The racial makeup of the city was 95.7% White, 2.1% from other races, and 2.1% from two or more races. Hispanic or Latino of any race were 2.1% of the population. There were 21 households, of which 19.0% had children under the age of 18 living with them, 52.4% were married couples living together, 9.5% had a male householder with no wife present, and 38.1% were non-families. 28.6% of all households were made up of individuals, and 9.5% had someone living alone who was 65 years of age or older. The average household size was 2.24 and the average family size was 2.46. The median age in the city was 41.5 years. 21.3% of residents were under the age of 18; 6.4% were between the ages of 18 and 24; 23.4% were from 25 to 44; 17% were from 45 to 64; and 31.9% were 65 years of age or older. The gender makeup of the city was 57.4% male and 42.6% female. 2000 census As of the census of 2000, there were 58 people, 21 households, and 17 families living in the city. The population density was . There were 24 housing units at an average density of . The racial makeup of the city was 91.38% White, 3.45% Asian, 5.17% from other races. Hispanic or Latino of any race were 3.45% of the population. There were 21 households, out of which 33.3% had children under the age of 18 living with them, 61.9% were married couples living together, 19.0% had a female householder with no husband present, and 19.0% were non-families. 19.0% of all households were made up of individuals, and 4.8% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.18. In the