Located just 60 miles north of Dallas Grayson County stretches out over 979 square miles and has a population of 125,467 (as of 2015). Founded in 1846 and named after Peter Wagner Grayson, an attorney general of the Republic of Texas. Grayson County residents enjoy the amenities of Lake Texoma, Lake Ray Roberts, and the city of Sherman which all offer a range of fun activities. The value of land and rural real estate for sale in Texas's Grayson County recently on Land.com was around $1 billion. This represents nearly 100,000 acres of land and rural real estate for sale in Grayson County. Grayson County ranks sixth out of 254 counties in the Lone Star State for the total acreage of land currently advertised for sale. There were five properties listed as sold in Grayson County through the Land Network Comparable Sales Program. This represented a total value of $10,673,500. Of all land and rural real estate for sale in Grayson County, Sherman had the most land for sale. Grayson County is the 88th largest county (979 square miles) in Texas. It's located in the Texoma Texas region of Texas.