Dobbin is an unincorporated community in Montgomery County, Texas, United States. According to the Handbook of Texas, the community had an estimated population of 170 in 2000, although some estimates place that figure at close to 300. Dobbin is part of the Houston–Sugar Land–Baytown Metropolitan Statistical Area.
Dobbin is located at 30°21′56″N 95°46′34″W / 30.36556°N 95.77611°W (30.3654842, -95.7760598 ). It is situated at the junction of State Highway 105 and FM 1486, approximately 12 miles north of Magnolia.
In 1878, the Central and Montgomery Railway built a line from Montgomery to Navasota. Two years later, a post office was established in the community under the name Bobbin. It became a shipping point for cotton and lumber in the mid-1880s and had a population of 250 by the 1890s. That number had declined to 168 by 1903. A few years later, the Trinity and Brazos Valley Railway built through Bobbin on its way to Mexia and Houston, making the community a railroad junction. In 1909, Bobbin's name was changed to Dobbin.