Sponsored Topics. Linden is a city in Cass County, Texas, United States. The population was 2,256 at the 2000 census. It is the county seat of Cass County. Linden is located at 33°0′29″N 94°21′52″W / 33.00806°N 94.36444°W / 33.00806; -94.36444 (33.008026, -94.364328).