Denison is a city in Grayson County, Texas, United States. It is 75 miles (121 km) north of Dallas. The population was 22,682 at the 2010 census. Denison is part of the Texoma region and is one of two principal cities in the Sherman–Denison Metropolitan Statistical Area. Denison is known as the birthplace of Dwight D. Eisenhower, the 34th President of the United States.
Denison was founded in 1872 in conjunction with the Missouri–Kansas–Texas Railroad (MKT) or "Katy" depot. It was named after the wealthy Katy vice president George Denison. Because the town was established close to where the MKT crossed the Red River (both important conduits of transportation in the industrial era), it came to be an important commercial center in the 19th century American West. In 1875, Doc Holliday had offices in Denison.
During the phylloxera epidemic of the mid-19th century, which destroyed the vast majority of wine grapes in Europe, Denison horticulturalist T.V. Munson pioneered methods in creating phylloxera-resistant vines, and earned induction into the French Legion of Honor, as well as sister city status for Denison and Cognac, France.
In 1901 the first electric "Interurban" railway in Texas, the Denison and Sherman Railway, was completed between Denison and Sherman.
In 1915, the Kentucky-based evangelist Mordecai Ham held a revival meeting in Denison, which resulted in 1,100 professions of faith in Jesus Christ.
Denison played host to 20th century notables such as the Marx Brothers and President Dwight D. Eisenhower, who was born on October 14, 1890, in Denison.
Denison is located in northeastern Grayson County, with the city limits extending north to the Red River, which forms the Oklahoma state line.