Catoctin Furnace, Maryland

Catoctin Furnace is an unincorporated community located on Route 15 between Frederick and Thurmont in the northern part of Frederick County, Maryland, United States.

Catoctin Furnace (also known as Catoctin Iron Furnace) was constructed in 1774 by four brothers Thomas, Baker, Roger and James Johnson to produce pig iron from locally mined hematite.

Furnace workers lived in company-owned stone and log houses.

After the furnace went out of business, many people from the community were forced to seek employment outside the tiny village.

In 1923, the property again changed hands, and the families residing in the formerly company-owned houses were given the opportunity to purchase their own homes.