[7] According to the United States Census Bureau, the city has a total area of 0.98 square miles (2.54 km2), all land.

As of the census[12] of 2010, there were 1,489 people, 724 households, and 396 families living in the city.

43.2% of all households were made up of individuals, and 25.4% had someone living alone who was 65 years of age or older.

As of the census of 2000, there were 1,530 people, 720 households, and 406 families living in the city.

There were 720 households, out of which 21.4% had children under the age of 18 living with them, 48.6% were married couples living together, 6.1% had a female householder with no husband present, and 43.5% were non-families.

41.9% of all households were made up of individuals, and 26.4% had someone living alone who was 65 years of age or older.

Miller was the focal point of a 2002 episode of This American Life discussing a racial incident that occurred in the town.