Todd’s Store and the U.S. Post Office in Mount Carmel, South Carolina, are integral components of the town’s historical fabric. Constructed around 1900, Todd’s Store, also known as the Knox–Scott–Todd Store, is a one-story, wood-frame commercial building featuring a false front—a common architectural style for rural general stores of that era. This establishment served as a central hub for commerce and social interaction in the community.

Adjacent to Todd’s Store, the Mount Carmel Post Office was established on June 3, 1854, with Sandiford Holmes appointed as the first postmaster. The post office played a vital role in connecting Mount Carmel’s residents to the broader region, facilitating communication and commerce.

Both structures are contributing properties within the Mount Carmel Historic District, which was added to the National Register of Historic Places in 1982. The district encompasses 40 contributing buildings constructed between 1885 and 1920, reflecting the town’s development during that period.

Today, while these buildings no longer serve their original functions, they stand as enduring symbols of Mount Carmel’s rich history. Visitors interested in exploring the town’s heritage can view these structures from public areas, appreciating their architectural significance and the roles they played in the community’s development.