 Its elevation is , and it is located at (30.7343621, -96.5649690).Mumford is unincorporated and has no post office, with the ZIP code of 77867; the ZCTA for ZIP Code 77867 had a population of 176 at the 2000 census.Located on the eastern bank of the Brazos River, the community is named for an early resident of the area, Jesse Mumford, who established a ferry over the Brazos in the vicinity in 1855.