Millersburg is a very small borough located in the state of Pennsylvania. With a population of 2,536 people and two associated neighborhoods, Millersburg is the 563rd largest community in Pennsylvania. Millersburg has a large stock of pre-World War II architecture, making it one of the older and more historic boroughs in the country.

Being a small borough, Millersburg does not have a public transit system used by locals to get to and from work.

The education level of Millersburg citizens is a little higher than the average for US cities and towns: 21.25% of adults in Millersburg have at least a bachelor's degree.

The per capita income in Millersburg in 2022 was $29,369, which is lower middle income relative to Pennsylvania and the nation. This equates to an annual income of $117,476 for a family of four. However, Millersburg contains both very wealthy and poor people as well.

The people who call Millersburg home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Millersburg residents report their race to be White, followed by Asian. Important ancestries of people in Millersburg include German, Irish, Italian, English, and Welsh.

The most common language spoken in Millersburg is English. Other important languages spoken here include Polish and German/Yiddish.