Warren is a medium-sized city located in the state of Ohio. With a population of 38,906 people and 19 associated neighborhoods, Warren is the 34th largest community in Ohio.

The citizens of Warren are slightly less educated than the national average of 21.84% for the average city or town: 15.23% of adults in Warren have a bachelor's degree or advanced degree

The per capita income in Warren in 2022 was $21,547, which is low income relative to Ohio and the nation. This equates to an annual income of $86,188 for a family of four. However, Warren contains both very wealthy and poor people as well. Warren also has one of the higher rates of people living in poverty in the nation, with 35.05% of its population below the federal poverty line.

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

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