Hagerman, TX is eight miles northwest of Sherman in north central Grayson County. In the early 1870s settlers came to the community, which became a center for area farmers. It was originally called Steedman, in honor of county judge S. D. Steedman, and its post office, established in 1880, was called Steedman until 1909. When the tracks of the Missouri, Kansas and Texas Railroad reached the community in 1909, its name was changed to Hagerman, to honor railroad attorney James Hagerman. The community post office closed sometime after 1930. In the 1930s and 1940s Hagerman's population was reported as 150. Though most of the townsite was submerged under Lake Texoma in 1944, Hagerman is marked on the 1970 county highway map by a church, and, several miles away, a cemetery.
Hagerman. National Wildlife Refuge is near by and worth a visit. The decision to name the refuge after the town of Hagerman was reportedly made in 1944. A historic marker located near the site on Hagerman National Wildlife Refuge marks the location of a 10 acre tract denoting the original town site that lies within what is now Lake Texoma.