Welcome to Harlem, Ohio, a vibrant small town founded in 1823 that boasts a population of approximately 3,953 residents. Known for its rich history in African American culture, Harlem was a key stop on the Underground Railroad and has been home to influential figures like poet Langston Hughes. This lively town has sister cities in Harlem, New York and Johannesburg, South Africa, and offers visitors a unique blend of history, art, and community spirit.