[4] According to the United States Census Bureau, the city has a total area of 0.14 square miles (0.36 km2), all land.

There were 73 housing units at an average density of 600.3 per square mile (231.8/km2).

There were 81 housing units at an average density of 578.6 per square mile (223.4/km2).

30.6% of all households were made up of individuals, and 18.1% had someone living alone who was 65 years of age or older.

There were 82 housing units at an average density of 652.2 per square mile (251.8/km2).

37.2% of all households were made up of individuals, and 16.7% had someone living alone who was 65 years of age or older.

About 14.0% of families and 14.4% of the population were below the poverty line, including 20.6% of those under the age of eighteen and 6.3% of those 65 or over.

Millersburg is within the English Valleys Community School District.

[12] English Valleys took possession of the remaining school building in Millersburg and did not immediately decide as to its disposition.

[13] As of December 2009 it remained empty, and there were potential plans to convert the building into transitional housing for poor families or those affected by domestic violence.