[7] Citizens of its county seat, Mount Vernon, voted to allow beer and wine sales, both on and off premises in May 2013.

In 2020, the population was 10,359 and its racial and ethnic makeup was 76.03% non-Hispanic white, 3.80% African American, 0.38% Native American, 0.66% Asian, 0.06% Pacific Islander, 0.59% some other race, 4.44% multiracial, and 14.05% Hispanic or Latino of any race.

[15] According to a study[16] ordered by the Mount Vernon Economic Development Corporation in 2013, the local retail trade area population is 12,771 people.

The EDC study determined the average sale price of lakefront property on Lake Cypress Springs (2012) was $484,000, with 91 percent of the 1,400 water-front homes being second residences.

The following school districts serve Franklin County: Franklin County is represented in the Texas House of Representatives by the Republican Gary VanDeaver of New Boston, Texas (Tx.HR Dist.

[18] Franklin County is part of the First Congressional District of Texas which has been represented by Republican U.S.