Colerain, although unincorporated, has a post office, with the ZIP code of 43916. It lies along U.S. Route 250. It is located on the counties north-east border. Colerain was originally built up chiefly by Quakers from North Carolina and Virginia, who left those states due to their opposition to slavery.

Fun Facts

The community was named after Coleraine, Northern Ireland, the ancestral home of a share of the first settlers. A post office called Colerain was established in 1825, and remained in operation until 1907. Colerain was originally built up chiefly by Quakers from North Carolina and Virginia, who left those states due to their opposition to slavery.

Josiah Fox (1763–1847) retired in Colerain. He was a British naval architect noted for his involvement in the design and construction of the USS Constitution.