Grayson County is in Texoma Texas. Of the 254 counties in the Lone Star State, Grayson County ranks 88th in terms of size (979 square miles). Texas's Grayson County includes roughly 1,000 acres of timberland for sale based on recent Land Network data. The combined market value of land for sale here was $3 million. The average price of timberland for sale in Grayson County was $675,793. Browse all Texas forest and timberland for sale on the Land Network to find the right timberland acreage for your commercial or individual investment needs.