1117 Gallagher Road Sherman, Texas 75090 USA 903.893.2161 or 1.800.677.TCOG; FAX 903.813.3511 Home Governing Body Staff Members Job Openings Administration Area Agency on Aging Community Development Texoma Housing Partners Events Links Search Region 3 Housing Needs Texas Heritage Trails Program The Texoma Council of Governments (TCOG) is an organization comprised of city and county governments, ...