Lily is a former town in Day County, South Dakota, United States.

The town was dissolved in March 2017 by the Day County court due to the population reaching zero.

[5] Lily was a depot served by the Chicago, Milwaukee, St. Paul and Pacific Railroad[6] from 1898 until 1979.

[8] In 1889 Vice President Hubert Humphrey’s maternal grandfather, Andrew Gutorm Sannes, settled his family in Lily.

[9] Hubert Humphrey, Sr., after graduating from the Drew School of Pharmacy in Minneapolis, Minnesota, moved to Lily in 1903 and opened his first drugstore.

(Today a small white sign cryptically marks the empty corner lot where the store had stood.)

[10] In 1907 they moved to Wallace, South Dakota, where Hubert Humphrey, Jr., the notable politician, was born on May 27, 1911, in a bedroom over his father’s drugstore.

Hubert Humphrey, Jr., states, "I was baptized in the Highland Lutheran church in a rural section just north of Lily, South Dakota.

[13] According to the United States Census Bureau, the town has a total area of 0.30 square miles (0.78 km2), all land.