Middlefield is a very small village located in the state of Ohio. With a population of 2,753 people and two associated neighborhoods, Middlefield is the 398th largest community in Ohio.

The overall education level of Middlefield is somewhat higher than in the average US city of 21.84%: 25.49% of adults 25 and older in the village have at least a bachelor's degree.

The per capita income in Middlefield in 2022 was $35,930, which is upper middle income relative to Ohio and the nation. This equates to an annual income of $143,720 for a family of four. However, Middlefield contains both very wealthy and poor people as well.

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

The most common language spoken in Middlefield is English. Other important languages spoken here include Polish and Italian.