Lily is a former town in Day County, South Dakota, United States. The population was 4 at the 2010 census. The town was dissolved in March 2017 by the Day County court due to the population reaching zero.
Lily is located at 45°10′53″N 97°40′58″W / 45.18139°N 97.68278°W / 45.18139; -97.68278 (45.181496, -97.682783).
According to the United States Census Bureau, the town has a total area of 0.30 square miles (0.78 km), all of it land.
As of the census of 2010, there were 4 people, 2 households, and 1 family residing in the town. The population density was 13.3 inhabitants per square mile (5.1/km). There were 13 housing units at an average density of 43.3 per square mile (16.7/km). The racial makeup of the town was 100.0% White.
There were 2 households of which 50.0% were married couples living together and 50.0% were non-families. 50.0% of all households were made up of individuals and 50% had someone living alone who was 65 years of age or older. The average household size was 2.00 and the average family size was 3.00.
The median age in the town was 55.5 years. 0.0% of residents were under the age of 18; 25% were between the ages of 18 and 24; 0.0% were from 25 to 44; 50% were from 45 to 64; and 25% were 65 years of age or older. The gender makeup of the town was 25.0% male and 75.0% female.
As of the census of 2000, there were 21 people, 10 households, and 5 families residing in the town. The population density was 69.2 people per square mile (27.0/km²). There were 14 housing units at an average density of 46.1 per square mile (18.0/km²). The racial makeup of the town was 100.00% White.
There were 10 households out of which 30.0% had children under the age of 18 living with them, 40.0% were married couples living together, and 50.0% were non-families. 50.0% of all households were made up of individuals and 40.0% had someone living alone who was 65 years of age or older. The average household size was 2.10 and the average family size was 3.00.
In the town, the population was spread out with 28.6% under the age of 18, 4.8% from 18 to 24, 14.3% from 25 to 44, 9.5% from 45 to 64, and 42.9% who were 65 years of age or older. The median age was 54 years. For every 100 females, there were 75.0 males. For every 100 females age 18 and over, there were 114.3 males.
The median income for a household in the town was $16,250, and the median income for a family was $23,750. Males had a median income of $0 versus $0 for females. The per capita income for the town was $7,938. There were no families and 12.5% of the population living below the poverty line, including no under eighteens and none of those over 64.