Sherman is a city in and the county seat of Grayson County, Texas, United States. The city's estimated population as of 2009 was 38,407. It is also one of two principal cities in the Sherman-Denison Metropolitan Statistical Area.
The City of Sherman was named after General Sidney Sherman (July 23, 1805 – August 1, 1873), a hero of the Texas Revolution. The community was designated as the county seat by the act of the Texas legislature which created Grayson County on March 17, 1846. In 1847, a post office began operation. Sherman was originally located at the center of the county, but in 1848 it was moved about three miles (5 km) east to its current location. By 1850, Sherman had become an incorporated town under Texas law. It had also become a stop on the Butterfield Overland Mail route through Texas. By 1852, Sherman had a population of 300. It consisted of a public square with a log court house, and several business, a district clerk's office, and a church along the east side of the square.
During the 1850s and 1860s, Sherman continued to develop and it participated in the regional politics. The first flour mill was built in 1861. In 1862 the publisher of Sherman's anti-secessionist Whig newspaper, the Patriot, was murdered. During and after the Civil War, north Texas outlaw bands led by Jesse James and William Quantrill were seen in Sherman. Years later, James spent at least part of his honeymoon in Sherman, where he was photographed on horseback.