Hummelstown is a very small borough located in the state of Pennsylvania. With a population of 4,529 people and three associated neighborhoods, Hummelstown is the 337th largest community in Pennsylvania.

A relatively large number of people in Hummelstown telecommute to their jobs. Overall, about 11.83% of the workforce works from home. While this may seem like a small number, as a fraction of the total workforce it ranks among the highest in the country. These workers are often telecommuters who work in knowledge-based, white-collar professions. For example, Silicon Valley has large numbers of people who telecommute. Other at-home workers may be self-employed people who operate small businesses out of their homes.

The citizens of Hummelstown are among the most well-educated in the nation: 43.21% of adults in Hummelstown have a bachelor's degree or even advanced degree, whereas the average US city has 21.84% holding at least a bachelor's degree.

The per capita income in Hummelstown in 2022 was $51,411, which is wealthy relative to Pennsylvania and the nation. This equates to an annual income of $205,644 for a family of four. However, Hummelstown contains both very wealthy and poor people as well.

Hummelstown is a somewhat ethnically-diverse borough. The people who call Hummelstown home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Hummelstown residents report their race to be White, followed by Asian. Important ancestries of people in Hummelstown include German, Italian, Irish, English, and Dutch.

The most common language spoken in Hummelstown is English. Other important languages spoken here include Arabic and Korean.