Jonah is an unincorporated community in Williamson County, Texas, United States.
[1] As of the 1990 census, the community had a population of 60.
[citation needed] Formed around mills along the San Gabriel river, the community went by several names until 1884, when the name "Jonah" was approved by post office officials.
[2] The Jonah school still exists as a community center.
In 1972, the Jonah Water Special Utility District was formed and continues to serve the surrounding area.