Lancaster is a medium-sized city located in the state of Ohio. With a population of 41,174 people and 13 associated neighborhoods, Lancaster is the 32nd largest community in Ohio.

The education level of Lancaster citizens, measured as those with bachelor's degrees or advanced degrees, is similar to the national average for all American cities and towns. 20.66% of adults 25 and older in Lancaster have a college degree.

The per capita income in Lancaster in 2022 was $30,252, which is middle income relative to Ohio and the nation. This equates to an annual income of $121,008 for a family of four. However, Lancaster contains both very wealthy and poor people as well.

The people who call Lancaster home describe themselves as belonging to a variety of racial and ethnic groups. The greatest number of Lancaster residents report their race to be White, followed by Black or African-American. Important ancestries of people in Lancaster include German, Irish, English, Italian, and Scottish.

The most common language spoken in Lancaster is English. Other important languages spoken here include Spanish and Chinese.