Oatmeal is an unincorporated community in Burnet County, Texas, United States. Its population was 20 in 2000. The area's first settlers were German families during the late 1840s who lived on Oatmeal Creek. The community's name is either an alteration of a Mr. Othneil – the area's first gristmill owner or a supposed translation of the name Habermill. A po…Oatmeal is an unincorporated community in Burnet County, Texas, United States. Its population was 20 in 2000. The area's first settlers were German families during the late 1840s who lived on Oatmeal Creek. The community's name is either an alteration of a Mr. Othneil – the area's first gristmill owner or a supposed translation of the name Habermill. A post office was established in 1853 under the name Oatmeal. The community had the first orchard in Burnet County and a cheese pressing station operated here. A gin built in the 1870s continued to serve as a local landmark into the early 1900s. It also had a general store at one time. A cemetery was deeded in 1871, although burials were recorded in the area as early as 1854. In 1936, Oatmeal had two churches and scattered dwellings. By 1990, the population was around 20 – consisting mostly of families engaged in farming and ranching. It also had a church, a community center, and a cemetery during that time. That figure remained the same in 2000.