J.B. Sumner moved to this section in 1872 and founded what is now Sumner. The present site was a dense forest. He donated land for the railroad right-of-way, railroad park, and courthouse square and jail lot. The next year Presbyterians erected Maria Church. From 1882 through 1884 disastrous floods and overflows of the Tallahatchie River forced the people of Sumner to go by boat for supplies to Webb (which was at the time called Hood). A post office was established in 1885, and the town incorporated in 1900.