Eureka is an unincorporated community in Franklin County, Texas, United States. According to the Handbook of Texas, the community had a population of 18 in 2000.
Eureka had a church and one business in the 1930s. There were several scattered houses in 1985. Its population was 18 in 2000. There are two cemeteries near Eureka: Fairview and Pierce's Chapel cemeteries.
Eureka is located northwest of Mount Vernon in northwestern Franklin County. It sits near the Hopkins County line.
In 1896, Eureka had a school with one teacher and 37 students. It remained in the 1930s. Today, the community is served by the Mount Vernon Independent School District.