Madison County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 13,455. Its seat is Madisonville. The county was created in 1853 and organized the next year. It is named for James Madison, the fourth President of the United States. In 1852, Hillary Mercer Crabb was elected to serve the unexpired term of State Representative F. L. Hatch. Among Crabb's accomplishments as a legislator was the introduction of a bill to create Madison County.